Minor updates to PhameBlogSearch

Summary: Use Profile Image, remove skin, show domain info better, add New Post button. Ref T9897

Test Plan: Test new buttons, see new images.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T9897

Differential Revision: https://secure.phabricator.com/D14671