Add block disables to BCFactory

Now if you set the blockId to 0 or -1 in the config, the block will not
be loaded.
Fix Tank net sync
Fix Pipe connections with Iron Engine
Don't render tank sides where stacked
Added Flood Gate + Pump tweaks

The Flood Gate still needs a texture, but functionally it all there.

All you have to do is pump in a fluid and it will place it in the world.