Scale the Maze automatically for larger or smaller maps.  Also misc cleanup.
Scale the Maze automatically for larger or smaller maps.  Also misc cleanup.

R=spertus@google.com

Review URL: https://codereview.appspot.com/13648052

git-svn-id: 2cf55447cea94972d775c94cce66c944ede0459c@1361 c400ca83-b69d-9dd7-9705-49c6b8615e23

TechplexEngineer/EasyJ4FRC,adrgerez/ardublockly,carlosperate/ardublockly,CocoMake7/CocoBlockly,adrgerez/ardublockly,CocoMake7/CocoBlockly,carlosperate/ardublockly,TechplexEngineer/EasyJ4FRC,kallex/blockly,kallex/blockly,adrgerez/ardublockly,CocoMake7/CocoBlockly,TechplexEngineer/EasyJ4FRC,carlosperate/ardublockly,TechplexEngineer/EasyJ4FRC