Reverts Cael's retard flailing.  Do not fuck with zone sharing ratios unless you know what you are doing, as air movement then becomes quite chaotic and derpy.  Should fix some issues with ZAS.
Fixed fire.
Merge pull request #2619 from Asanadas/master

BEF Merge
Makes liquid fuel cleanable again.  Got removed in last commit since all that was done was revert Cael's changes.
Merge pull request #2621 from SkyMarshal/bugfixes

Reverts Cael's retard flailing.  Do not fuck with zone sharing ratios...  Also: Fixed fire.
Utopia fixes.
by rowtree
Merge pull request #2622 from Spamcat/master

NRA Utopia
Rowtree bugged me to commit this for him.
Merge pull request #2623 from SkyMarshal/bugfixes

Rowtree bugged me to commit this for him.
Alignment adjustment for IA clothing sprites.