Allow pastes to be edited

Summary: Permits the name and langauge of a paste to be edited. This will eventually allow the visibility policy to be edited as well.

Test Plan: Edited name/langauge of some pastes. Tried to edit a paste I didn't own, was harshly rebuffed.

Reviewers: vrana, btrahan

Reviewed By: btrahan

CC: aran

Maniphest Tasks: T1690

Differential Revision: https://secure.phabricator.com/D3376

src/applications/paste/application/PhabricatorApplicationPaste.php

@@ -35,6 +35,7 @@ final class PhabricatorApplicationPaste extends PhabricatorApplication {
       '/P(?P<id>\d+)' => 'PhabricatorPasteViewController',
       '/paste/' => array(
         '' => 'PhabricatorPasteEditController',
+        'edit/(?P<id>\d+)/' => 'PhabricatorPasteEditController',
         'filter/(?P<filter>\w+)/' => 'PhabricatorPasteListController',
       ),
     );