Adds counter of aliens killed.
Renames ResourceHandler
Moves tween classes to seperate package.
Adds mysql connection
Adds scoreboard to game.
Adds score class.
Adds username to preference file.
Adds ability to change username through preferences.
Adds button to submit score.
Adds animation to score screen.
Adds a comment.
Adds some space to the preferences
Adds static vars for db connection
Adds connection var.
Adds event to submit button.