The light and dark style sheets are now self-contained instead of only coloring. Both the have been synchronized, though the light style sheet still needs some adjustments.

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

Segregated the coloring of the UI from the rest of the styling in the CSS, so now style-base.css is loaded before the colorizing CSS files.

Selecting the desired stylesheet now works correctly, including saving settings between application launches.

Reworked the styling UI. Now there are 4 options: light, dark, custom_light, and custom_dark. Things don't quite work right, but the proof-of-concept is done.

Additions for View navigation, including saving dockwidget locations and status. Also added remembering of "Advanced Mode" between restarts of QGC

Changes for the new "View" navigation, and fixes to get most of the dockwidgets working with the new view system

view, rather than having universal dock widgets.

This commit still allows configuration widgets to be loaded from qgc files
assuming that there is no APM generated xml file (arduplane.pdef.xml) in
the files/%autopilorname%/ directory. This filename needs to be
configurable, and selectable at runtime. It is not yet.

3DMouse working on Windows and Ubuntu

Implementation of 6DOF 3DMouse input (Windows only). Not tested yet.

Fixed some destructor commands

Cleaned up MainWindow init dramatically, relying now on Qts persistence capabilities. Fixed a number of view persistence issues this way