conversation paging
This CL takes the approach of using a permanent ViewPager that
pages through conversation fragments. Its adapter is only
set and populated when the conversation view is shown. In all
other cases, it is an inert empty layer.
One risk with this approach is that it breaks with the typical
fragment transitions that all other content panes use.
On the other hand: conversation fragments are full-on fragments
and benefit from loader separation, and the FragmentManager
takes care of save/restore of state.
Change-Id: Ic17d1ae3f35a0cb1119967f2d34433ad27fa307c
22 files changed