Auto scale GUI for first time mac users

[Eric B Jones]

Since some (40%) of Apple users can't seem to find the Settings button inside or outside of the game to do it themselves.

Hopefully it won't break it for everyone else...

Use the stuff we use to fix their red-screen issue: scaling = fbY/static_cast<double>(wsY);

In the Framework singleton.

[Eric B Jones]

Need to check on OSX.