R1:dcec8e60ccac

Move edit/deactivate operations onto project view page in Releeph

Summary:
Ref T3092.

Releeph's objects basically go like this:

- At the top level, we have Projects (like "www" or "libphutil")
- Each project has Branches (like "LATEST" or "v1.1.3")
- Each branch has Requests (like pull requests, e.g. "please merge commit X into branch Y (in project Z)")

Currently, there's no real "project detail" or "branch detail" page. Instead, we have a search results page for their contained objects. That is…