Move feed off home page to just /feed/
Summary:
I haven't actually been using this as much as I thought, and am more interested
in the full view than the per-project view.
Let's try moving it off /home/ and then maybe adding some filtering options at
some point.
Test Plan: Looked at "all" and "my projects" in feed. Looked at home page.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran, epriestley
Differential Revision: https://secure.phabricator.com/D1658