Mark UIExamples as a prototype

Summary: Ref T9103. This application is only useful for developing Phabricator, and in general is not kept "production ready". Mark it as a prototype.

Test Plan: visit /applications/, see it marked as prototype.

Reviewers: epriestley

Reviewed By: epriestley

Subscribers: Korvin

Maniphest Tasks: T9103

Differential Revision: https://secure.phabricator.com/D13822

src/applications/uiexample/application/PhabricatorUIExamplesApplication.php

@@ -30,6 +30,10 @@ final class PhabricatorUIExamplesApplication extends PhabricatorApplication {
     return self::GROUP_DEVELOPER;
   }
 
+  public function isPrototype() {
+    return true;
+  }
+
   public function getApplicationOrder() {
     return 0.110;
   }