Added drawBox function to PixelEngine and fixed the shadows

Also added "remove grid" feature by pressing s
Added Debug mode in Server side
Made optimizations the reading of input on the client
Minor bug fixes
Added debugging mode

You can now play as the guards and command the other players through
"code.txt"
Made a dropKahons function in GameEngine

Kahons are now dropped around the thief that dies.
Fixed priority bug in moves