Railcraft goodness
Merge remote-tracking branch 'upstream/1.7-update' into 1.7-update
Element 125mB stuffs

uses onItemUseFirst to capture using ElementItem on an IFluidHandler
(something with a tank) and then proceeds to empty/fill the tube based
on whatever it should be doing. Current Issue is that it doesn't update
the tile entity clientside which means stuff like WAILA displays the
wrong volume and it renders wrong
Also changes placing/picking up element fluids to require 8 test tubes
Elements done
Molecules done

Boom
Merge pull request #365 from hilburn/1.7-update

125mB elements and molecules