Fixes T13312. Currently, Manage → Branches has a list of branches on the same page. This has a few minor issues:
- Pager is at the top (see T13312), which is weird.
- "Default" icon is mystery meat.
- Table is kind of pointless/redundant in general?
Previously, this table had more information about technical status of each branch (autoclose/track/publish) but most of these details have been simplified/eliminated, and the main "Branches" view now has more information than it did before.
Get rid of this and just link to the main view.