Merge pull request #1 from morrigan/master

Added PHP files for login and register.
Minor UI changes, deleting states
Merge branch 'master' of https://github.com/Tweety-FER/ultimate-ciglan

Added PHP login and register handlers.
Zvukovi, on-off zvuka i manje izmjene
Brand new action selection menu added
Minor changes on the action selection menu
Added logout script
Added script for uploading level by admin (password protected)