Declare used properties

Summary: Also fix couple of other errors.

Test Plan: Executed controllers.

Reviewers: epriestley

Reviewed By: epriestley

CC: aran, Korvin

Differential Revision: https://secure.phabricator.com/D3627

src/applications/project/controller/PhabricatorProjectProfileEditController.php

@@ -19,6 +19,8 @@
 final class PhabricatorProjectProfileEditController
   extends PhabricatorProjectController {
 
+  private $id;
+
   public function willProcessRequest(array $data) {
     $this->id = $data['id'];
   }