Updates references / language about organization settings that
were previously labeled as "Notifications", but are now labeled
as "Automated messages and emails".
Fixes#22136.
Co-authored by: Lauryn Menard <lauryn@zulip.com>
Adds a shared file with general information about Zulip's
translation project based on the text in web-app's language
picker, and uses that text at the beginning of the help articles
for setting the organization notifications/announcement language
and for the user setting their personal language setting.
Also makes some small edits/updates to the help center article
about the user's personal language setting to align with current
UI and current documentation styles.
The changes in the last few commits changed the semantics of the
organization default language to no longer be the primary source of
information for a user's language when creating a new account.
Here, we change the settings UI and /help/ documentation to reflect
this.
This better sets expectatations for the fact that in Zulip, the
Organization settings UI is available read-only to non-administrator
users.
Tweaked by tabbott to update some additional references.