am dbb9a2fd: Merge "cleanup unused classes, show date in tag list." into gingerbread

Merge commit 'dbb9a2fd92cf5f5adedb6b748ddd75e621c023ee' into gingerbread-plus-aosp

* commit 'dbb9a2fd92cf5f5adedb6b748ddd75e621c023ee':
  cleanup unused classes, show date in tag list.