Summary:
Ref T13275. Add portals to the search index so that:
- they show up in fulltext global search; and
- the typeahead actually uses an index.
Also make them taggable with projects as an organizational aid.
Test Plan: Indexed portals with `bin/serach index`, searched for a portal with "Query", with fulltext search in main menu, with typehead on "Install Dashboard...", changed the name of a portal and searched again to check that the index updates properly.
Reviewers: amckinley
Reviewed By: amckinley
Subscribers: PHID-OPKG-gm6ozazyms6q6i22gyam
Maniphest Tasks: T13275
Differential Revision: https://secure.phabricator.com/D20389
