Toggle issue fixed, Merge after Zoe pushes up her branch

[JerichoSM]

No images yet, but the underlying issue with the button not working is fixed.

[JerichoSM]

Working correctly, the "n" key should toggle the music on and off with a single click. musicToggle is now a global variable, in order to fix the issue of some rooms not being consistent, and still requiring and extra button press to turn off music.

Going forward, a music toggle icon should appear in the right side of the screen, small enough to not distract or clutter the view, but big enough to be noticed for utility.

[fenwickjb]

Looks great!
Couple of hopefully quick fix suggestions:

• Can the red lines be a bit "thicker"??
• Can we move the image placement to the corner just above the coin count? Our focus is up there for "info" it seems.
• When I started the game the music was initially playing but the icon was X'd out. After toggling with n it was "in sync"

[fenwickjb]

I left a comment on the PR page. Looks great, 3 hopefully quick fixes mentioned there.