Partway through refactoring of UAS deletion. This is in order to actually support removing UASes from QGC, which is currently impossible.

Synchronized the dark theme to the changes to the light theme from the last commit. Also made more text change color based on selected theme.

HIL config improvements, fixed confusion about which dock widget is part of which view, main window behaving now

sending GPS sat information via a low-bandwidth link like the UM96 @ 9600 baud should also work at low frequencies like 0.2 Hz

Fixed some destructor commands

view only" functions and renamed some of the old functions. This version compiles, but has a lot of bugs.

Fixed roll angle in Google earth, still not smooth. Fixed a number of threading issues. Fixed all custom widget related bugs. Improved MAVLink decoder. Reduced CPU usage substantially across all views