check square if manually marked
avoid cells rotating being blocked

this caused them to be checked too early
don't check last cell if still rotating
add expert mode
automatically mark empty and cross pieces
fix score in expert mode

after each level the score was actually going down :)
fix score bug

score in expert mode was actually higher than in normal mode
in some situations, now it is lower till level 13
adding disqus
var renames
game.gameActive -> grame.active
game.Border -> game.BORDER