Add a setting to blanket-disable autoclosing revisions in a repository

Summary: For git workflows where developers push personal feature branches to the origin, this is a quick workaround until T1210 is implemented properly. I'll also mention this in D2446.

Test Plan:
  - Committed a revision in an "autoclose" repository; it was autoclosed. Committed a revision in a no-autoclose repository, it was not autoclosed.
  - Edited repositories, saving the "autoclose" setting as enabled/disabled.

Reviewers: aurelijus, btrahan

Reviewed By: aurelijus

CC: aran

Maniphest Tasks: T1210

Differential Revision: https://secure.phabricator.com/D2448

src/applications/repository/controller/edit/PhabricatorRepositoryEditController.php

@@ -248,6 +248,10 @@ final class PhabricatorRepositoryEditController
         $repository->setDetail('branch-filter', $branch_filter);
       }
 
+      $repository->setDetail(
+        'disable-autoclose',
+        $request->getStr('autoclose') == 'disabled' ? true : false);
+
       $repository->setDetail(
         'pull-frequency',
         max(1, $request->getInt('frequency')));
@@ -606,6 +610,22 @@ final class PhabricatorRepositoryEditController
               'Default branch to show in Diffusion.'));
     }
 
+    $inset
+      ->appendChild(id(new AphrontFormSelectControl())
+        ->setName('autoclose')
+        ->setLabel('Autoclose')
+        ->setOptions(array(
+            'enabled'   => 'Enabled: Automatically Close Pushed Revisions',
+            'disabled'  => 'Disabled: Ignore Pushed Revisions',
+            ))
+        ->setCaption(
+          "Automatically close Differential revisions which are pushed to ".
+          "this repository.")
+        ->setValue(
+          $repository->getDetail('disable-autoclose', false)
+          ? 'disabled'
+          : 'enabled'));
+
     $inset
       ->appendChild(
         id(new AphrontFormTextControl())