* This adds a new page called Project Command accessed by navigating to
<url>/projects/<project>,commands
* This supports creating a change through the new dialog (though note
you can't edit any files, will have to switch to gwtui to do that)
* Supports creating the change as a private and wip or one or the other.
* Supports the Run GC button allowing you to run gc on projects.
Feature: Issue 5232
Change-Id: Ibd3507c0fdb84303c8a978e3ea87f251582b13e8
c30b2fe981