Adding a qml OPP example for sending pictures

[ChangeLog][QtBluetooth][General] Added a new
Object-Push example.

Change-Id: I78988771259dd9c7b65080bb7fb9828f6f55ece4
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>
Add documentation for picture transfer example and minor QML fixes

Change-Id: I8ef9e19de9f48797034fd186dff4b0e096748b1d
Reviewed-by: Fabian Bumberger <fbumberger@rim.com>
Reviewed-by: Alex Blasche <alexander.blasche@digia.com>