Wall Improved and Scoring Implemented

Wall now seperates from introWall, and has player colors. Scoring is in
place, the values are defined in settings.js. When a Player collides all
Players reset and their tails get longer, and the one who collided gets
a score penalty.
Added sequencer.js
Merge branch 'WallImprovements&Scoring' of github.com:kreldjarn/TRON
Various tweaks