Disable button when scatter completes the limit on the last organism
Use the environment.randomLocation helper when scattering
The species defines what properties to show in the info view
Don't limit the species images to any context
Rewrite the title when the agent changes in the info popup
Info View: Better positioning and scaling of species
Clean up graph in controllable hawk model
Add label for environment features
Allow changing the environment background on the fly
Normalize the time-based counting to "normal" speed.

If the model speed is set slower or faster, then the counting will
slow/speed up accordingly.
Initial version of the "hawks and rabbits in a changing environment" model
Move some defaults into the species definitions
Fix NPE in Firefox when referring to TouchEvent

See the notes at the bottom of: https://developer.mozilla.org/en-
US/docs/Web/Guide/Events/Touch_events#Example
Tweaks to the behavior of the changing environment model