Added Additional Fuctionality to Jump Nav: Jump to users, projects, symbols, or
create new tasks

Summary: see title

Test Plan: Tested jump nav and found the correct urls were being loaded. Old
functionality was not effected.

Reviewers: epriestley, btrahan

Reviewed By: epriestley

CC: ddfisher, allenjohnashton, kpark517, aran, epriestley

Differential Revision: https://secure.phabricator.com/D1642