Rebase to Clippy.js

[Lenni-builder]

Using the existing library Clippy.js would allow this extension to be improved. Cliply could be easily animated for example and would look more realistic. This would also make implementing #23 (other agents) way easier, since Clippy.js provides all of them already.

[Lenni-builder]

Turns out this isnalready using Clippy.js and I was too dumb to read here as well. Sorry for bombarding your issue tracker with invalid issues.