R1:a7c1f872a04d

Show project hashtags prominently on project pages

Summary: Currently, it's unreasonably difficult for users to figure out some project hashtags because the rules aren't always intuitive.

Test Plan: {F174508}

Reviewers: chad

Reviewed By: chad

Subscribers: epriestley

Differential Revision: https://secure.phabricator.com/D9830