Improve type and icon information in typeahead
Summary:
Ref T10289. This probably doesn't cover everything but should do a little bit better.
Although we should mabye just exlude milestones from this menu completely?
Test Plan: {F1093937}
Reviewers: chad
Reviewed By: chad
Maniphest Tasks: T10289
Differential Revision: https://secure.phabricator.com/D15191