Search Typeahead now returns projects.

Summary: Search typeahead now returns project objects with project images :). I have set the displaytype to "Project" if that's okay. Alternatively  We can also set it to some short description of a given project. All this time, I was thinking Jump Nav to be the search typeahead ... I am so dumb ... Lolz :P

Test Plan: {F44336}

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin, AnhNhan

Maniphest Tasks: T2948

Differential Revision: https://secure.phabricator.com/D6057