R1:db546e5558c6

Fix Pholio new mock feed story

Summary: Gives some strength to name (needed to over-ride new images) and new create copy.

Test Plan: Create a new mock, see proper story in feed.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Differential Revision: https://secure.phabricator.com/D18246