Document most of the new Diffusion management panel

Summary: Ref T10923. This isn't complete yet, but reduces lies and increases truths.

Test Plan: Read documentation, clicked new "Documentation" nav item.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10923

Differential Revision: https://secure.phabricator.com/D15868

src/applications/diffusion/controller/DiffusionRepositoryManageController.php

@@ -109,7 +109,7 @@ final class DiffusionRepositoryManageController
       $key = $panel->getManagementPanelKey();
       $label = $panel->getManagementPanelLabel();
       $icon = $panel->getManagementPanelIcon();
-      $href = $repository->getPathURI("manage/{$key}/");
+      $href = $panel->getPanelNavigationURI();
 
       $item = id(new PHUIListItemView())
         ->setKey($key)