[ADD] implemented url upload support, cannot test atm ..
Merge branch 'master' into urluploadsupport
[FIX] implemented a dirty workaround for google's retardo
DocumentProvider API ...
[CHG] changed the uploadfragment's layout (nicer looking button etc)
[ADD] global manager for undeterminate progress
[CHG] using global indeterminate manager now
[FIX] made LoadingBroadcastReceiver thread safe
[FIX] fixed logical flaw
[ADD] new IntentFilter for upload fragment, we are accepting urls now as
well
[ADD] progress indicator while downloading image from url
[ADD] toast notification for user
[FIX] fixed some issues that occured when closing the upload activity
too soon
[CHG] not unregistering the loading receiver any more