Light sabers finally glow in the dark

Energy swords are light sabers and light sabers glow in the dark. This
now also applies to spess station 13. Double e-swords will, of course, emit a little more light than normal e-swords because there are two of them.

Also, when making a double e-sword it will take the color of the original e-sword (the one you click on).

Preview:
![lighty-light-sabers gif](https://cloud.githubusercontent.com/assets/5267867/4100329/6aa5f24c-3090-11e4-8ff8-2366524c3815.gif)
(when I get very bright I use my PDA flashlight to be able to find the turned off swordhandles on the floor)