Naomi is not done!

- Improved Healthbar code
- Improved background music playing (won't reset every time you die and
etc)
- If you click the mouse during the introduction text it will start
fading right away
Improved Intro

- When the introduction text is fading, you can click it again to skip
the fading
- Improved intro level (background now correctly fits the screen and
doesn't translate weirdly)