Fixed Compiler Error C2864 - only static const integral data members can be initialized within a class

Display full flight modes

Add map type menu

Add map type selector menu; use Bing maps by default; zoom to a more
human scale on Go Home

Bugfix (missing updates): PrimaryFlightDisplay now connecting to UASCreated and UASDeleted signals.

Joystick commands

Fixed a couple issues with configuration settings and the UI displaying them

Compilation fixes for Windows

nd an empty message aborts

Fixed styling of the toolbar, specifically coloring and sizing of the buttons, and made the labels aware of the current window theme. Also made some changes to updating the toolbar when switching UASes or when UASes disconnect/reconnect.

Improved UI when no joysticks are connected. Also removed hotplugging support for joysticks as it wasn't working, though SDL2 should fix that.

Vastly improved the joystick documentation, removed some redundant/unnecessary code, and fixed a couple of small bugs. This code should be ready for live testing.

All UI elements in the JoystickWidget window are now updated properly when switching UASes, which was the last major issue with this code. A single small bug remains involving the UI not updating the axis values when switching joysticks until the axis is moved.