Conpherence - add edit control for rooms

Summary: Fixes T7582. Basically if its a room we should be able to change title + policy and if its a thread just the title. T7582 had ideas to do a dropdown but "view in column" doesn't make sense from conpherence afaik - what would the page you'd end up with the column be? (maybe home?) Anyway, that is iteration we can add laters

Test Plan: edited room metadata successfully from main and column view. edtied thread title from main and column view.

Reviewers: epriestley, chad

Reviewed By: epriestley

Subscribers: Korvin, epriestley

Maniphest Tasks: T7582

Differential Revision: https://secure.phabricator.com/D12252