Adds logs/fingerprints preventing welding fuel grief.

Admins will now get logs with a handy JMP button any time welding fluid is spilled. The nologs argument is to prevent logspam when the fluid automatically spreads out. Fingerprints are also added to welding tanks when someone takes fluid from them.

My only concern with this so far is that it can get a bit spammy if someone has wrenched open a tank and is dragging it around quickly. A new warning pops up for every new tile the tank goes over, as fuel is left added to it. I'm open to suggestions as to how this could be addressed, as I'm not sure.