Changes

Cleaned up engine power display
 (commit: cdebf25)

Fixed a bug that was causing pipes to leak excess

This is an interesting commit, it not only fixes the RS Cells
(@King_Lemming) it also makes it so the network can respond to demand as
needed by shutting down overheating engines, since the pipes won't
accept power now unless something is requesting it.
 (commit: 0882dad)