Sort out EditController / ManageController / EditproController Diffusion hierarchy

Summary: Ref T10923. This cleans up the remaining "pro" mess left by the cutover.

Test Plan: Viewed, managed, edited a repository.

Reviewers: chad

Reviewed By: chad

Maniphest Tasks: T10923

Differential Revision: https://secure.phabricator.com/D15871

src/applications/diffusion/controller/DiffusionRepositoryEditActivateController.php

@@ -1,7 +1,7 @@
 <?php
 
 final class DiffusionRepositoryEditActivateController
-  extends DiffusionRepositoryEditController {
+  extends DiffusionRepositoryManageController {
 
   public function handleRequest(AphrontRequest $request) {
     $response = $this->loadDiffusionContextForEdit();