When it comes to life right before your eyes - Added accounts!

This means that before you can play, you have to log in: you go to manage accounts and press log in, where you enter a username and password. If the username doesn't exist, nothing happens, and if the passwords don't match, nothing happens either. You can also log out and  you can also create a new account. If the name already exists, you have to chose a new name.
Then you can play! This name is automatically used when finishing. When finished, pressing tab now shows different highscores: global highscores (every player), your highscores (only your own runs) and other highscores (everything but your own runs).

I also added an error message in the level editor that remains there for 5 seconds. Right now, the only message is if you try to save without 2 portals. I'm also gonna add something like that in the menu and the game itself.