Move "Macros" to a first-class application
Summary:
This is mostly to unblock D3547.
- Move "Macros" to a first-class application called "Macros".
- After D3547, this application will also house "Memes" (macros with text on them).
- This will also make them easier to find; the top navigational query I field is "where are image macros?" nowadays, since it's not intuitive they're part of files.
- This makes some of the UI mobile-aware but doesn't set the device flag yet, since there are still some missing pieces.
- I'll separate storage out and continue modernizing the UI as we unblock and integrate D3547.
Test Plan: Created, edited and deleted macros. Viewed files.
Reviewers: btrahan, vrana, teisenbe
Reviewed By: vrana
CC: aran
Maniphest Tasks: T175
Differential Revision: https://secure.phabricator.com/D3572
