Gates and wires now glow in the dark when active

Note: Some texture re-work might be necessary... I think the current
lit texture are far too bright.

Found a bug: popping a gate out of the pipe doesn't update it on the
client side (a.k.a. the gate pops out but is still rendered on the pipe)
Merge pull request #2324 from ganymedes01/6.3.x

Made Gates and wires glow in the dark when active