Summary:
There have been a couple of requests for this since bookmarks are "out this year like woah" and "totally uncool dude".
Allow users to save named custom queries and make them the /maniphest/ default if they so desire.
A little messy. :/
Test Plan: Saved, edited, deleted custom queries. Made custom query default; made 'no default' default. Verified default behavior. Issued a modified search from a custom query.
Reviewers: btrahan
Reviewed By: btrahan
CC: aran, epriestley, 20after4
Maniphest Tasks: T923, T1034
Differential Revision: https://secure.phabricator.com/D1964
