Divide the mengview out of the PreviewAndPicture

The MengView process the size and alpha bitmap by processing the gesture
event.
Set the Main Activity No Title
Group Combine work well
add shutter button
Fix the crash when cancel select picture in CreateNewGroup
Add the UM shared 

It's not so enough for me
I will remove it and replace it using ActionProviderShare
Add the function change the camera but not work