initial xbox driver included

Conflicts:

	qgroundcontrol.pro
	qgroundcontrol.qrc
	src/uas/SkyeMAV.cc
	src/uas/SkyeMAV.h
	src/ui/UASSkyeControl.ui
	src/ui/uas/UASSkyeControlWidget.cc
	src/ui/uas/UASSkyeControlWidget.h
Connect xbox to input mixer (not ready yet)
[cherry-pick] latest version 20140210

Conflicts:

	qgroundcontrol.pro
	src/comm/MAVLinkSimulationLink.cc
	src/ui/MainWindow.cc
	src/ui/MainWindow.h
Connect xbox and lift spinbox