R1:fd0a606f7942

Misc Phame cleanup

Summary:
Ref T9360.

[x] View Live useless on archived blogs
[x] Edit Blog Image treatment like profiles
[x] Pager next/prev should keep you on whatever view you're on
[x] Unset user titles aren't falling back properly
[x] Add captions to edit fields for better clarification

Test Plan: Archive a blog, Edit a photo, verify pager on live and internal blogs, check empty titles, and view new edit form instructions.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin…