This adds styling such that when you hover over a stream in the streams
list and you are not subscribed, you will see a faint grey checkmark
that serves as a target of where to click so you can subscribe to a
stream.
There is a case with browser zoom that the inline-block split view
breaks down and the two 50% tabs fall below each other. This prevents
that issue from happening.
This is a major change to the /#subscriptions page, converting it to
by a side-by-side list of streams and their settings in an overlay.
There are no new features added/removed, but it's a huge changeset,
because it replaces the old navigation logic and moves the stream
creation modal to appear in the right side of this overlay.
brockwhittaker
Brock Whittaker
Tomasz Kolek
Tim Abbott
trueskawka