Update Repository Management pages to new fixed UI

Summary: Simplifies the Repository Management pages to the new fixed column layout. I've also moved "Status" into the Basics page, which feels better, and moved "Documentation" as a nav item to a button in the header. This removed "action list" and "curtain view" from the management panels and uses the new bits from Config/Phacility. Undecided if the icons should stay or go for the nav. Left them in for Diffusion. I want to update the EditEngine pages to display in this UI and not leave the portal, but I haven't dug into that this page. I'm a bit worried it will not easily be possible.

Test Plan:
Generate a svn, git, hg repository, test each of the new pages and each of the new buttons. Activate, deactivate, etc.

{F5164674}

Reviewers: epriestley

Reviewed By: epriestley

Spies: Korvin

Differential Revision: https://secure.phabricator.com/D18523