Summary: Adds a new DiffusionBranchListView which replaces the BranchTable when browsing all branches in Diffusion. Has all the same capabilities, but is easier to read, adds a Compare button, and plays nicely on mobile. It does take up more space, but I think that's generally OK here since we expect our branches to not be heaping piles of intern revert branches.
Test Plan:
Follow a few repositories with branches, like Phabricator and KDE's Krita. View layouts on mobile, tablet, desktop. Try out new compare button.
{F4996207}
Reviewers: epriestley
Reviewed By: epriestley
Subscribers: avivey, Korvin
Maniphest Tasks: T12824
Differential Revision: https://secure.phabricator.com/D18113
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