Don't draw board behind Rules, except for 4:3 devices
Deleted old AI.js
Adds neil_ai, button, and undo fix
Changed Tutorial 56 text to explain zoom button
Redid Enemy Interaction code
Fixed my undo Fix
Adj. enemy checks take actions into account.
tut46 - added spartan highlight
Rearranged buttons, code cleanup
Merge remote-tracking branch 'origin/AI' into gh-pages
Merge branch 'gh-pages' into pinch-to-zoom