Emagged cleanbots now spew foam instead of spawning gibs!

Emagged cleanbots will now release foam that will slip anyone caught in it!
This is the same effect generated by AI liquid dispensers.

Reasoning for this Pull Request:
The cleanbot's emag effect was completely worthless. It spawned gibs randomly. That is it. What made things worse is that after doing so, it would proceed to clean up the gibs as in a dog eating its own vomit.

This PR seeks to make the cleanbot more "fun" to emag. It will give an actual reason to bother doing it, and may prove useful to clever traitors and the clown!

Also in the PR: Converts the "/red" text to span classes.

This is a mirror of the /tg/ PR, but edited to omit the code for hacking them.