Fix for layout glitch when using HIL Configuration, and added checks to see if there is an active UAS before attempting to connect HSIDisplay signals

Hotfix: Fixed widget / UAS initialization order which led to text messages (and other updates) being ignored if the widget was not open when the UAS was created

Changes for new calibration in APM 3.0 (Re: https://github.com/diydrones/MissionPlanner/issues/38), and change in some of the serial timeouts

Addition of requesting status updates from APM, if APM is in a state with no status updates, this will request them

Change so Waypoints are the same across maps, and offline waypoints get appeneded to the end of the MAV's waypoint list on connect

Started adding numbers to QGC_APPLICATION_VERSION for development builds, since dev builds need the config file wiped out for UI changes to be visible

Fix for crash when removing item from QuickView, and addition of more generic signal/slot combonation for property updates