[web2py] reload models

[pbreit]

I can't seem to get a change I made to a function in a model to reload. One 
problem is that stopping & starting the server on my Mac does not work. But 
even when I quit web2py and re-open it, the edits I made to the function in 
a model are not getting used. I'm assuming it's cached somewhere but can't 
figure out what to do.