Make sponsor banners a slide

It would make sense if the big sponsor banners would be in a slideshow,
this way long build processes may be more "entertaining" ;-)
(I also like the Idea of minigames but who would sponsor for this? XD).

I think this would make sense.. question is how to implement this
- stay with custom simplytest_sponsors module and add in a simple cycle.js (that would probably be the fastest way)
- transform everything into nodes, implement a views slideshow (the clean, best practice way - takes a bit longer)