Switched button coloring so they're default grey with a :hover of blue instead of the other way around.
Fixed the QLabel:disabled colorings for the UI.
Removed the UnconnectedUASInfoWidget class as it could be replaced with a simple QLabel with the same functionality. Also styled the NO UAS warning on the ReadOnly mission view so it looks good in both dark and light themes.
The mission listing now has its UI disabled when not usable due to the lack of a connected UAS.
Reduced the QDockWidget's border down to 1px wide. Annoying to have 10px border on the widgets when they were floating.