Declared internal only installation in manifest; Wrapped ProgressBar in
FrameLayout to since API7 does not allow setting visibility via
RemoteViews; Now saving images to disk since API7 and 8 have tighter IPC
size constraints.  Setting ImageView is now done via Uri; No longer
storing Bitmap in Photo class - just Uri.  
TODO's: Implement ContentProvider to access internal storage since
Context.MODE_WORLD_READABLE is deprecated and security is tighter on API
15+.  Also should set the buffer stream size as appropriate for a device
screen size.
Merge remote-tracking branch 'origin/master'