Initialize graphics engine from widget.
Render skydome even in an empty world.
Render skydome in widget.
Implement changing resolution in rendering engine.
Fix FOV when changing resolution.
Add rotating camera to editor.
Render model in editor.
Add movement to the camera in the editor.

WADS, Space, Shift and Control.
Merge remote-tracking branch 'origin/master' into Design

Conflicts:
	ToolKit/Source/MainWindow.cpp
	ToolKit/Source/MainWindow.h
	ToolKit/Source/MainWindow.ui
	ToolKit/ToolKit.pro
Fixed merge errors