Miscellaneous improvements

Edits to admin.py, test_toMolecule, toSmiles, models, views, and
molecularStructure. These all took place while I was debugging
randomGenerator.
Debugging randomGenerator

This likely is a commit that put in some cruft. Said cruft will be removed
later. I'm debugging, there are a bunch of things marked "TEST" scattered
throughout for that purpose.

I might just rewrite the random generator wholesale. *sigh*
Renamed orgo_django/ directory to django/

Hope this isn't annoying.