I did a bit of cleanup in the page

* [[Experiments]]

putting the items in alphabetical order (again), eliminating some that are no longer needed, and so on. There are a few more [in the comprehensive listing](http://www.azimuthproject.org/azimuth/list/experiments), but I got tired. I would also like to clean up and compress all the experiments related to chemical reaction networks, since that stuff belong in [the book](http://math.ucr.edu/home/baez/stoch_stable.pdf).