Fixes the problem where the extract fluid filter wasn't being applied (surprised this hasn't already been reported, or at least I can't find it).
Also, the network will now try to extract fluids from other tanks in the same block when the default one "fails".
Basically should close stuff like #504, (the first part of) #358, and #320.
I might take a crack at the second part of #358 later.
Fixes the problem where the extract fluid filter wasn't being applied (surprised this hasn't already been reported, or at least I can't find it). Also, the network will now try to extract fluids from other tanks in the same block when the default one "fails". Basically should close stuff like #504, (the first part of) #358, and #320.
I might take a crack at the second part of #358 later.