Finish removing MAVLink generation code.
This was deprecated on Febuary 3rd, 2014 and removed a little later. This finally completes that process.
Merge branch 'master' of https://github.com/mavlink/qgroundcontrol into rem_mavgen

Conflicts:
	src/ui/MainWindow.cc
Merge pull request #798 from Susurrus/rem_mavgen

Finish removing MAVLink generation code.