Have initServer only get called when a server is actually started for the first time
Added utility method callGamemodeFunction to streamline exec'ing of gamemode function calls
Added onClientConnect gamemode function, called when the client establishes the connection
Added onInitialControlSet gamemode function, called when the client actively gains control in the game, to allow gamemodes to special override GUI settings or input commands
Cleaned up init'ng of the engine so stock UI module isn't required to trip configuration of the canvas
Added fallback so if nothing set the main content control for the UI after boot, we attempt to set the defined mainMenuGUI, on the chance nothing explicitly sets it on load
Fixed multiple case sensitivity issues
Adds GL ARB check for cubemap arrays for certain cases where the driver only supports the extension, not as core
Fixes undeeded namespace declaration in an inline operator function
Cleaned up/reordered some modules default in the data dir
WIP of Das Boot test map
Begun refactoring visualizer tools
Added default cloud and water textures to core/rendering so water and cloud objects work correctly
Added default Fog_Cube mesh so volumetric fog works correctly
Implements fix so cubemap arrays load correctly when texture resolution settings have been lowered
Begun refactor of asset import config editing/settings.
