Two changes here; one, background for right panel has placeholder
removed, and actual art inserted. Two, background effects changed up;
now there's noise everywhere, instead of some screens being in a void.

Signed-off-by: Ken Hoover <ken.hoover@mail.utoronto.ca>
Added check for DEBUG in despawn gap too, for even faster debugging.

Signed-off-by: Ken Hoover <ken.hoover@mail.utoronto.ca>
Sizing tweak for the arrow, looks much better now.

Signed-off-by: Ken Hoover <ken.hoover@mail.utoronto.ca>
Changed the number to hold in the to-free list, let's see if this
resolves a null pointer crash in later levels.

Signed-off-by: Ken Hoover <ken.hoover@mail.utoronto.ca>