fixed multilevel collision with bounds of POT
fixed the zoom offset but and refactored the level code in the collision code...
[gae] added tours to walk user through peirce basics; tour data in tour.js
fixed the UI resolution bugs, made the mode button much nicer
removed hidden text
removed an extra \n
Merge branch 'touch' of https://github.com/CurryBoy/Peirce-Logic into touch