Added new commands, added extra cmd handling for console
Fixed some CfgVars
ToString for CfgVarValues
Proper resizing for overlays & windows on game resize

- Added WindowResize event in Engine.cs
- Changed UI code to calculate Pixel <-> Screen with backbuffer info
- UIOverlay calls Recalculate on Window Resize event etc
More work on DevTools

- Logger now has *mode*F function when logging without Area
- ConsoleWindow has clear & cls commands(not exposed as Command)
- Graphics.GetDevice() to Graphics.Device attribute
-