Controller/Adapter/Cursor refactor

* Tie AnimatedAdapter and ConversationCursor together, removing
  the "weak link" via AbstractActivityController and
  ConversationListFragment
* Remove all throttling code for now (will revisit)

Fixes the ListAdapter changed crash, and almost certainly CIOBE
crashes; will find/update bugs in Buganizer

Change-Id: Ieb6ca7d77b5e64c822960eec2cb46d624c4d8e1e
3 files changed