Need to check for QImage failure otherwise it will through a qWarning.

mavlink: updated submode to latest master

New implementation of PX4 RC Calibration

Plus a few API tweaks

Mimic pending param support by just calling through to setParameter.

Fix Windows QUpgrade on TeamCity

UAS: disabled global position forwarding

FTP progress bar and download speed

Also updated to latest QGCUASFileManager implementation.

Also restructured signals to be more command-centric as opposed to
ui-centric.

Revert "Joystick: update gui and send new mavlink target messages". That PR broke Windows compilation and had other issues that also needed to be addressed.

Fix windows install

Joystick: update gui and send new mavlink target messages

Mavlink update

And I really mean it this time!

Copy platforms plugins to install

More FTP support, plus unit tests