Reset now works. This now resets the level (except for the level timer) back to the initial state.

TODOs

1. Make level timer difficulty (speed) dependent. i.e. At higher difficulties the timer will count down more slowly.

2. Handle out of time & end of level (all gold picked up) states

3. Start on the end-of-level scoring screen.

4. Start on level loader

I'll update the editor as soon as I get home and find my password.