Direct access to edit specific account settings

* Finish implementation of AccountSettingsXL.actionSettings()
* Point account manager entry point at it now
* Remove old AccountSettings activity
* Move AccountSettingsTests over to AccountSettingsXLTests and minor
  cleanups so it works in fragmentized activity.

Change-Id: I5f979a3a9a29dcbbe5a63833b184e6c0313652d5
1 file changed