First commit for the AutoScale pattern

Added the pattern, demo and documentation.
Fixed small typo bug
Extra test to check if body element scales properly.
Working example of full body scale.
Body now also scales well on smaller sizes.
Necessary CSS rule.
Merge remote-tracking branch 'origin/autoscale-pattern'
Fix naming and linking of auto scale demo.
Strip trailing whitespace.
Coding style cleanups.
Add "scaled" class after scaling elements.
Use browser version to switch between scale and zoom.