Pin buildbot and documentation by default

src/applications/buildbot/application/PhabricatorApplicationBuildbot.php

@@ -2,6 +2,10 @@
 
 final class PhabricatorApplicationBuildbot extends PhabricatorApplication {
 
+  public function isPinnedByDefault(PhabricatorUser $viewer) {
+    return true;
+  }
+
   public function getBaseURI() {
     return 'https://builder.blender.org/download/';
   }

src/applications/documentation/application/PhabricatorApplicationDocumentation.php

@@ -2,6 +2,10 @@
 
 final class PhabricatorApplicationDocumentation extends PhabricatorApplication {
 
+  public function isPinnedByDefault(PhabricatorUser $viewer) {
+    return true;
+  }
+
   public function getBaseURI() {
     return 'http://wiki.blender.org/index.php/Dev:Contents';
   }