A `.field` element already has left margin set as 10px and setting
left-margin explicitly for a `.field + .field` equal to the same
value is redundant. This rule is removed.
Margin is set as `10px 10px` which can be equivalently written as
`10px`.
The introduction of ".rendered_markdown table" in 00eaf3a, caused some
styling glitches in the "message formatting" overlay, such as an extra
right border and darker internal borders. This commit fixes these
glitches by duplicating bootstrap's table styles.
Show black scrollbars with a thin light border in day mode, or white
scrollbars with a thin dark border in night mode (both at 50%
opacity). This matches the native scrollbars on macOS pretty closely.
Signed-off-by: Anders Kaseorg <anders@zulipchat.com>
This commit separates the `waiting_period_threshold` setting from
the `create_stream_policy` setting, adding a new setting that the user
can use to select a waiting period threshold.
Both the invite to stream policy and create stream policy now have
three options: admins only, members and admins, or members after
waiting period/admins.
Fixes: #11573.
This moves help_table to informational-overlays.scss, replaces "," with
"or" and "P" with "shift + p" in order to be more clear and legible
this also improves the styling of the text.
These seem to have been there since the very first version of our
markdown styling, and I can't imagine why we would the behavior of not
line-wrapping links now.
(I think the "weird bug" mentioned in the comment history might have
to do with an old animation when you hovered over a link on portico
pages).
This appears to caused by trying to reuse this bit of spacing logic
from the Help Center's CSS rules.
I'm not altogether happy with this fix, but it resolves the issue and
we can defer further work until we're ready to clean up the
portico/landing pages CSS more generally.
This commit also adds a small functionality change where the results of
each webhook fixture message sent is now displayed to the user.
With a small tweak by tabbott to fix a styling bug.
Fixes#12122.
The `transition` property does not need prefixing. In fact, very
few properties need that nowadays. So remove it to simplify
the code. This is strictly a refactor with no style change intended.
Many of these styles shouldn't have been prefixed even if needed.
The prefixes exist exactly because the implementations might differ
from the incoming standard.
Looking at the supported browsers:
https://caniuse.com/#search=transition
We see that this property has had mainstream support from 2012 and
was supported on Firefox in 2006 !!!
perfect-scrollbar replaces both the appearance and the behavior of the
scrollbar, and its emulated behavior will never feel native on most
platforms. SimpleBar customizes the appearance while preserving the
native behavior.
Signed-off-by: Anders Kaseorg <andersk@mit.edu>
This commit introduces a simple field where the user can now specify custom
HTTP headers. This commit does not introduce an improved system for storing
HTTP headers as fixtures - such a change would modify both the existing unit
tests as well as this devtool.
This section was taking up too much visual weight, and drowning out other
elements on the page.
Once we remove the Upload buttons, we can likely shrink this further.
We remove the box-radius since at the smaller size it interferes with how
the logos look (and will look in the app).
We remove the margin-top to make this consistent with the spacing around
organization profile picture.
We change the max width from 730 to 500 since the Upload new logo button is
214px in length (not including margin), and those buttons are now inline
instead of on the next line.
The box-shadow was
* Not being applied to the images (the images get their box shadow from a
more specific rule)
* Being unintentionally applied to the upload/delete buttons
* Being unintentionally applied to the container housing the buttons and
error messages.
The last one especially looked bad, since it added boxes where there
otherwise wouldn't be a box.
This commit adds a new developer tool: The "integrations dev panel"
which will serve as a replacement for the send_webhook_fixture_message
management command as a way to test integrations with much greater ease.
Added a new button at the bottom of the stream list which redirects
users to '/#streams/all' where they can create new streams or subscribe
to new streams.
The button is not visible to guests.
Fixes#11642.
All the elements to which `display-none` class
is applied, are handled with `.show()`/`.hide()`
functions instead of `.addClass('display-none')`
and `.removeClass('display-none')`.
Therefore, we should use apply `display: none;`
to elements with `style` attribute.
This commits removes all usage of `display-none`.
Cleanup single message template moving CSS rules for box shadow
of a private message stream inside stylesheets. For any messagebox
inside of a `.private-message` element, the box shadow is set using
the class. In cases of normal streams, the box shadow is set using
inline style since we cannot have different classes for each color.
Changes made in drafts.scss are to keep the current style of not
having the left border. Setting style using classes, this rule had
to be overridden.
This commit renames the `create_stream_permission` field in the
templates to `create_stream_policy`, matching the field used in the
database model. This matches what `invite_to_stream_policy` does and
will be clearer when the `waiting_period_threshold` is split into its
own field.
This adds the same "x" button as we have in "stream search" or "people
search" to the user status modal.
The button is shown if someone types something, or if the status
message was already set (meaning there was already a value in the
input field). If the input field is empty, the button is not visible.
This fixes the follow-up comments from #12179.
- Changed the <p>s to <button>s and modified the css accordingly.
- Changed the css to use scss nesting.
- Changed the line-height from 1.0em to 1.1em, because on Safari the "g" was not fully displayed.
This commit creates a new organization setting that determines whether
a user can invite other users to streams. Previously this was linked
to the waiting period threshold, but this was both not documented and
overly limiting.
With significant tweaks by tabbott to change the database model to not
involve two threshhold fields, edit the tests, etc.
This requires follow-up work to make the create stream policy setting
work how this code implies it should.
Fixes#12042.
This bug turned out to pop up wherever a table existed in both
'settings' and 'organization settings', notably *excluding* both
'Custom Emoji' and 'Authentication Methods'.
The first thought to the solution was to simply add `thead` to the css
rule that applies the appropiate color for headers and the like. This
was successful, however it brought attention to a sub-problem:
`emoji-settings-admin` and `auth-mehtod-settings-admin` were both
creating table headers in the body of the table. This was causing the
rows in these two tables to be colored inversely from all the others.
This is also the reason why these tables are the only ones correctly
styled. These handlebars were updated with the headers moved out of the
body.
The even and odd rows of the tables were then colored appropriately.
Fixes: #12209
There are no other <h5>'s in static/templates. Basically just copied the
styling of `#settings_page h3` above it.
The vertical spacing here isn't great, but I think will require some deeper
fixes.
A few bugs were caused by 7d4cebbc1e.
In night mode:
- home icon was hidden by grey box on "All messages" narrow.
- inactive tabs (eg "mentions" and "stars") were hidden behind grey box.
- topic tab was hidden behind grey box in topic narrow.
In both night mode and normal mode:
- "private messages" tab in individual/group pm narrows was illegible.
These were all results of unexpected differences in precedence rules
caused by the refactor.
Removed the preview tag from the css rule, reduced the undo preview tag
to a font-size of 15px.
The preview tag being attached to the rule proved unnecessary. The icon
for reverting back to an editing state also dipped below the horizontal
level of the icon row.
This change adds rules for ordered lists that makes them visually similar
to bulleted lists.
Note that is has no effect because our markdown implementation doesn't
currently generate ol tags.
This change decreases the spacing at the top and bottom of bulleted lists
and blockquotes.
Specific rules for p and p:last-of-type have been added for both uls and
blockquotes to maintain visually consistent spacing in all cases.
This reverts commit 6441ad0677 since it
causes two bugs: (1) when rendering new message there is glitch where
the profile picture flashes (2) when someone sends a new message their
profile picture flickers.
Historically, we had a large bottom-margin on p tags designed to
produce correct spacing between consecutive paragraphs (10px, similar
to the spacing between consecutive paragraphs in different messages by
the same sender). And then we tried to fix the end-of-message spacing
with a p:last-of-type rule, which fixed that problem, but created lots
of unnecessary extra space just before a bulleted list, block quote, etc.
We recently added some p+ul and p+blockquote negative margin rules in
62f2396ee2 to try to fix this, but those
created some secondary issues in interaction with the p:last-pf-type
rule. This rabbit hole is likely somewhat deep.
The right fix for this overall formatting is to implement the
inter-paragraph spacing as a p+p rule, rather than a bottom-margin on
the p rule; then, we get all the properties we're interested in for
how paragraphs interact.
We may need to do some follow-up work to add small p+ul and
p+blockquote rules to get the pixel-perfect spacing we want (or maybe
just adjust the ul/blockquote spacing CSS), but this is clearly a
better architecture for doing this work.
Fixes#12101 through solving the same problem it does.
This has no functional changes, just making the implementation more
standard.
We don't have any blockquotes outside markdown rendering, which is why
it's correct to collapse the blockquote rules.
This eliminates unnecessary use of the message_content CSS class in
favor of rendered_markdown, which makes more sense for places outside
messages where we display rendered Zulip markdown.
Now that we have a scroll container for the PM list,
it doesn't make much sense to limit the number to
five.
We may resurrect this feature if "more conversations"
actually fetches more conversations, but it doesn't
currently.
We also may soon make it easy to limit PMs to just
unread messages, which will make the max-5 feature
perhaps less necessary, and we don't want to make
the UI overly complicated.
Center aligned the icons from streams and decreased the font-size of
the icons from the global filters.
This dramatically improves the visual appearance of the left sidebar.
Fixes: #11917.
Blockquotes and unordered lists had a large amount of space above them
when preceded by a paragraph tag, which looks ugly. This is a common
issue with the CSS rendering of essentially all markdown
implementations (e.g. GitHub has this bug).
We resolve the issue by reducing that whitespace with negative
margins. Hopefully, this won't create other weird glitches in the
process.
Fixes#11631.
This adds a parent selector, `rendered_content`, to night mode syntax
lighlight selector. This helps us in getting the "day mode" syntax
highlight styles in night mode.
This adds a class `rendered_markdown` for all the elements which have
rendered markdown content; This is done to add different styles for
rendered content in day mode and night mode.
Also replace the element selectors from CSS to use the class.
Using lazysizes we only load images if they are in view.
This decreases load time and save more bandwidth since images are loaded
after html is loaded and if they are on screen.
Fixes#3564.
Instead of using the `trapsarent` keyword, which is interpreted
as Safari as black with an opacity of 0%, re-use the gradient colors
themselves in order to lead to a single color gradient. This allows
for the homepage to look the same regardless of browser.
Fix#11985.
This fixes the confusing behavior that errors sending messages were
not immediately user-visible.
Based on work by Dominik Gryboś in #11479.
Fixes#10537.
It is observed in Mozilla margin was considered from other side of thumbnail
due to some special padding issues observed in mozilla.
To fix this top and left value are assigned to 0 so that it automatically
takes its correct position in all browsers
Fixes#11867.
When we try to hover over Open or Download they were not highlighted
in night mode, because of incorrect specificity. This commit adds
highlighting in night mode (possibly fixing a regression when we made
night mode less aggressive about hover).
Fixes#11887.
This allows user to download the latest version of android apk from
the apps/android.
This will help the users who use Android without Google Play to
download the app and install it with ease.
To implement this I added a Download APK link on the apps.html page
which always points to the latest released version.
Fixes part of #11647.
We have this strange business requirement that the
blue-ish highlights for the current PM go into the
left gutter and all the way to the right edge.
We also have markup that treats the list of PMs
as a list inside the list item for the "Private
messages", which makes sense logically.
Before this change, the padding was done for the
outer top-left `ul`, but that caused the inner PM
rows not to have that padding when you hovered them.
Now we pad each individual list item and/or inner
list item or div.
Fixes#11879.
This was introduced in e0236646
For 1.5 years we did not find a case that needed it (besides the
`a` tag hover state, that is not obvious if it was needed or it was
used as an example)
It is not obvious if this solution was a good idea. The concern was
that `body.night-mode` is more specific than `body` and some styles
might override others less specific in cases we might not want that.
Of course, we want that in the majority of cases, and css-specificity
rules are not simple to comprehend.
Good further reading:
http://cssspecificity.com/https://specificity.keegan.st/
The added complexity of the resulting styles and the added code that
might not serve any practical purpose seem to not be worth it.
We now use 10px to the left of major elements in
left sidebar.
And we then explicitly use 19px for the following:
icons in top left
indent for (more conversations)
stream hashtag icons
stream lock icons
We also kill off 2px of gutter that was caused
by whitespace in the HTML (and was slightly messing
up alignment of names beneath "Private messages").
Finally, we make the topic indent a bit more explicit.
The previous gradient must have been from a previous design; it looked kind
of crazy against our current homepage. This widget also appears on /help,
/integrations, and other pages with a variety of different backgrounds, so a
neutral, muted style is probably safest.
The icon change is just because fa-off seems to be broken/missing. Maybe it
was in Font Awesome 3?
The extra padding line is to supercede padding (I assume) unintentionally
added by `.top-links a` to this widget on /help.
The border radius is a compromise between:
* Windows: no border radius on windows
* Mac: border radius top and bottom
* Ubuntu: border radius only on top
Ideally the image itself would just have border radius matching the OS, but
that's a bit tricky to do in the image editing software I'm using.
In this commit, I've added a feature to unstar all the starred
messages. This is useful, e.g., for folks who are using starred
messages to keep track of things they should come back when next at
their desktop.
The event flow is the standard one for a feature with a confirmation modal:
(1) User clicks on unstar all messages.
(2) We display a confirmation modal; if the user confirms, we send a
request to the backend to clear all starred messages.
(3) The events system sends that UI update back to us, removing the
stars from the UI.
Fixes#11401.
Most elements, apart from chevrons, now have explicit
font sizes.
In some cases I chose integer values that were close
to the calculated values you would get with all the
ratio calculations.
And then I tweaked how the hashtag/lock icons get
aligned.
The alignment for those icons if off in this version; it'll be fixed
in an upcoming commit.
The fonts there used to be 14.2px due to an arcane
calculation. Now we explicity set a value.
If you expand Private Messages, the font inside now
is explicitly set to 13px. It used to be 12.8px due
to a complex calculation.
This is a fairly big commit, but at the end
it simplifies a lot of things.
It's difficult to fix highly coupled code in
incremental steps because, well, it's highly
coupled code.
The main thing this does is give each type of
chevron in the left sidebar its own class
* all-messages-arrow (NEW)
* stream-sidebar-arrow
* topic-sidebar-arrow
Before this change, the "All messages" chevron
was using stream-sidebar-arrow, which was a
strange name for something that's not actually
in the stream sidebar. Obviously this was
cargo culted.
There was not much JS to change here--we just
fix the click handler for "All messsages".
And then there's a one-line change to the template,
and the rest is re-organizing the CSS.
Using a more specific class avoids confusion related
to the .arrow class, which is not only a popover concept,
but also a Zulip concept in the left sidebar.
The way we build chevrons is super messy and highly
coupled. This comment reflects an audit I did on the
code in its current state.
Subsequent commits will make things a bit easier to
understand.
We could arguably just use zero-unreads everywhere,
but we definitely don't want zero-topic-unreads
inside our PM list.
I prefer to just have these two concepts:
zero-pm-unreads
zero-topic-unreads
And it's super easy to share CSS properties for both.
The antialiasing decisions we made for the webapp should be constant
over the entire page, not limited to particular subsections or themes.
If we wanted antialiasing, we should do it on the entire page, not
individual random widgets. But it's not clear we actually want to do
it on the entire page. The `-moz-osx-font-smoothing: grayscale`
setting now happens by default in OSX Mojave (40% world market share
right now and growing), so there's no reason to override it. And
without retina displays, generally, subpixel rendering provides better
results than antialiasing (which overrides subpixel rendering).
Thanks to Anders Kaseorg for advice on this issue.
Add a background highlight to vote count button if currently
logged in user votes on that option.
Tweaked by tabbott to use better variable names and Rishi for better
styling.
After discussion, we decided that the red color is too distinct
and does not convey the idea of "almost offline".
This changes the new "unavailable" status circle's color from dark
red to grey, the same color used by the "offline" status circle.
Fixes#11589.
Adds SCSS style for the "unavailable" user status and enables its
usage in `buddy_data.js`.
The style is a red circle with a horizontal line. The values might
look a bit 'magic' but they were considered carefully ` height` of
1px was too thin, 2px was too thick, thus 1.5px was chosen.
Visually, #zoom_help_text acts like
.organization-settings-parent div:first-of-type when the Zoom option
is selected, but isn't treated as such.
No visual change with the #google_hangouts_domain change; just there to make
the code more readable/defensible.
Adblock Plus's "Block social media icons tracking" setting blocks
images with for social media platforms in their names from loading, so
we rename the Google logo to bypass this.
When copying a message by clicking on "copy and close" button in
message edit box an alert appears that says "Copied!"; Background
of the message is set corresponding with the day mode but not the
night mode. This changes the background of the alert message to
the dark color in night mode.
The background color of the portico pages aren't true white,
so this commit adjusts it to match the actual portico page
background color to eliminate differences.
This is mostly adding markup, calling some convenient
functions in buddy_data.js, and adjusting CSS.
To make the circles update dynamically, I mostly
orchestrate this though activity.js for now. It's
possible we'll want to adjust that eventually to
happen through something like a `presence_events`
dispatcher, but that's essentially what
a good part of `activity.js` does now.
We're soon gonna have user circles in four different places,
and the fourth place, Private Messages, will have different
size/position CSS.
Now each component does positioning and sizing in its
main CSS file:
user info, group info -- popovers.scss
buddy list, group PMs -- right-sidebar.scss
(We also use the more explicit syntax for padding each
side.)
We now have a function get_user_circle_class
that returns one of these values:
"user_circle_green"
"user_circle_orange"
"user_circle_empty"
And we put that in the templates.
And then CSS renders the circle of the appropriate
color.
The unit tests now explicitly capture whether
we are rendering the correct kind of circle.
This is a pure code move.
We want to use user circles in the left sidebar,
so this code will no longer belong in
right-sidebar.scss.
This code is just related to drawing the circles.
We can still position in size in other CSS files
(with more context-specific selectors).
This fixes a longstanding UI issue when you have way too many recent
private message conversations, as you can now scroll down the list to
find what you're looking for.
Fixes#5384.
Date separator exists inside the message_row, which causes the
message controls to be visible even when hovering on date
separator. These two rules are redundant and cause this buggy
action. Other rules handle the behaviour of message controls
being visible on message box hover. Hence these can be removed.
Previously, if you scrolled down all the way in the left sidebar, and kept
your mouse hovered over a link, you had a feeling that there was still "more
stuff", since you could see the top of "Back to Zulip" peeking out over the
top of the URL Chrome (and maybe some other browsers) add in the bottom left
corner.
This just adds a bit of margin so that "Back to Zulip" is above that when
scrolled all the way down.
The patch to bootstrap will make the position smarter, but we still
want to preserve the 100px default vertical offset we chose for visual
reasons.
Tweaked by tabbott to preserve the visual design.
Changed <h5> to <p>, and removed the special formatting of
.empty_search_text to make this more in line with the formatting we
generally use with empty narrows.
This removes the left border extending the stream label from the
recipient bar in from the drafts in drafts modal. Those borders are
important in the message feed for containing several messages, but
here we're only ever going to show individual drafts, and this change
avoids potential color clashes with the blue box surrounding the
recipient blocks.
This removes the change in background to a darker one for active draft,
also removes the change in recipient_row_date color to blue; adds a blue
border around the draft box.
The width of the messages div is set to 600px, while the
digest-email-container can be 500px at the most. Increasing the width
of the digest-email-container makes the /digest slightly more
readable.
The padding changes move the number a bit to the right and down, towards
where the bottom right corner of an unread count box would have been. This
makes the number look better aligned with the unread count boxes above it.
We want the search widget, when visible, to be
outside the scroll container for the stream list.
One obvious use case is if you start scrolling, and
then realize it might be less effort to search.
Also, for user search, it already worked this way.
We have to add a couple resizing hooks here, but
it's not necessary to change the actual resize
calculation, since we move the section inside
of #streams_header, which is already accounted
for.
The only markup change here is to add
a `stream_search_section` class. I don't
know why we use `notdisplayed` here instead of
jQuery, or what `input-append` is for, but I
considered them outside the scope of this change.
We can also remove some crufty CSS that was
compensating for it being inside the container.
First, we are not removing Group PMs from the
right sidebar, where most people see it.
There is a setting called:
[ ] User list in left sidebar in narrow windows
There are probably very few people that turn that on,
and even when they do, the setting only takes effect
when your window is less than a certain width.
This feature bitrots very quickly, because very few
core maintainers use it.
It's already kind of broken. It gets very crowded,
and we get CSS bugs when we move the right sidebar
into the left sidebar. (We can fix those bugs, but
they crop up unexpectedly due to the nature of CSS.)
We historically tried to maintain a ratio between
stream list, single-user buddy list, and group-user
buddy list, but the group-user buddy list gets
particularly crowded out, and it's basically useless
now.
We want to revisit the entire feature eventually, but
this commit at least gives the normal buddy list some
breathing room.
Also, if you need to see the info in the group PM
list, you can basically expand "Private Messages" to
see your recent group PM conversations. And if you
want to see who's actually online, that info is
already implicit from the normal buddy list.
This change only impacts users who have the setting
to put the user lists in the left sidebar when they
have a narrow window.
First, we move ".right-sidebar-items" as an entire
group.
Second, we append the items to "#left-sidebar"
instead of ".narrows_panel".
The name `bottom_sidebar` was misleading, because it
includes the entire "normal" left sidebar.
It includes the 4 narrow links at the top plus the
stream/topic list.
We now call is narrows_panel.
Note that the left sidebar sometimes also includes
the user list (with a display setting turned on).
And it will eventually include other views.
We also remove an intermediate value in the resize
calculations.
This adds date dividers within a single message group when the only
reason we had previously been splitting apart two message groups is a
change of date. The overall effect is a cleaner message list user
experience.
The downside of this change would be that the recipient bars no longer
will always show a new date for date changes; to fix that, we rewrite
how the floating recipient bars both set the date field on the
floating recipient bar itself, as well as ensure that non-floating
recipient bars don't show duplicate dates.
In a future design update where we modify how message recipient bars
look, we may very well be able to simplify this logic by removing some
of the dynamic nature of the recipient bar calculations. But this is
a good implementation of what remains.
Tweaked significantly by tabbott from Steve Howell's original, both to
extract these changes from a larger PR as well as to modify the
first_visible_message logic to handle some tricky corner cases.
Fixes#10171.
This changes the border-radius to 6px for the tabbed display, which is not
in line with the current Zulip style for border-radius (4px). However 6px
really looks a lot better for this (possibly because it's a bigger box than
most of our other boxes?)
Having a tiny bit of margin below the stream list
makes it possible to see the bottom of the scrollbar.
It also makes it so that the scrollbar activates
for a tiny range of list sizes where before the
last element would have been right up against the
bottom of the page, but we wouldn't scroll.
We have always intended to have 10px of whitespace
below the navbar, and this enforces it directly
and explicitly in the CSS.
Note that the three major panels still should
have a margin of 50px, which is equal to
the safe outer height of the header (40px + 10px).
The border makes the alignment look nicer. Without
a border your eyes plays tricks on you and makes it
seem like numbers are not in the same column.
The border color is the same subtle color as the
backgrounds in others.
Because CSS is annoying, you have to tweak the padding
to make room for the border.
(It should look ok in night mode, too.)
This replaces the current usage of stream names with stream ids.
This commit also removes the `traditional` attribute from the invite
form as now we are sending stream_ids as an argument; this was the
only place in the codebase we used traditional=true, and it's great to
have it removed.
We had initially designed the poll widget like a blog
post with comments beneath it but it makes more sense
to think of it as just a simple poll with options.
This is likely not the "right" fix in that it involved a negative
margin, but this does eliminate an annoying visual glitch where the
scrollbar overflows above its container in the left sidebar, without
creating other apparent problems.
Fixes#8731.
User was able to click delete button multiple time which could cause
multiple delete requests. This commit disables and hides the delete
message button after the first click and shows a spinner until http
the delete request responds.
Also adds a casperjs test to ensure that spinner becomes visible and
delete button becomes invisible after clicking on delete button for
first time and hides spinner and show delete buttton when message is
deleted.
Fixes: #11219.
NOTE: If you revert this commit, you want to revert
the immediately prior commit as well. The history
is that Ishan made some improvements to the widget,
but there were some minor bugs. I decided not
to squash the commits together so that the git
history is clear who did what. (In particular, I
want questions about the JS code to come to me if
somebody does `git blame`.)
Anyway...
This is a fairly significant rewrite of the polling
widget, where I clean up the overall structure of
the code (including things from before the prior
fix) and try to polish the prior commit a bit as
well.
There are a few new features:
* We tell "other" users to wait for the poll
to start (if there's no question yet).
* We tip the author to say "/poll foo" (as
needed).
* We add edit controls for the question.
* We don't allow new choices until there's
a question.
These mentions look like regular mentions except they do not
trigger any notification for the person mentioned. These are
primarily to be used when you make a bot take an action and
the bot mentions you, or when you quote a message that mentions
you.
Fixes#11221.
The legacy "Updated Successfully" message shown after saving changes,
is removed, and replaced with our standard "Saving" spinner and
animation.
Fixes: #11177.
This adds a proper template for the /digest page, making it a
reasonable way to view the digest email content for development and
debugging.
Fixes: #11016.
Add explanation in popover on disabled add-subscriptions input elements,
admin can't add subscribers to non subscribed private streams, only
subscribed users can.
Fixes#10593