Handle invalid coord strings

Closes #135
Gruntfile updates for epoc and clok
Loading progress indicator

Closes #136
Optimise score course JSON size

Part of #137
Missing semi-colon detected by IE
API update for score course control codes
Animation performance improvements

Avoid excessive calls to updateAnimationDetails
Jukola enhancements
Merge pull request #138 from Maprunner/dev

Various improvements to handle Jukola files