#588 database and interfaces change
#589 api and model changes
#589 #573 sample app change
Added peer file public string to conversation thread identity contact.
https://github.com/openpeer/opandroid/issues/599
'feature-20140730-is-composing' merged into '20140401-dev-stable' branch in 'op' submodule
 #588,#589 enable context based group chat
#589 make sure messages update on initial start
#589 fix call/messages list order for CBC group chat
#601,#602 integrate video crop and local surface view media change
#602 dynamically set local surface view
#588 reconstruct DB when upgrading
#589 use wrapper function to save conversation event
#602 local surface view now working
#589 fix wrong cbc id when saving conversation events
#589 fix conversation_event when adding contacts locally
Merge branch 'feature-20141002-video-crop' into feature-20141006-group-chat
#589 cleanup
#601 Experimental checkin
#601 now working for back camera
#604 integrate participants changes log in context based chat view