added django-appconf module and refactored code to use it. some minor cleanups
converted to relative imports. Is this a good thing? I dunno. Lol!
removed embedded jquery and referring to admin's version.
removed PyCharm comment to reduce size of diff compared to original.
removed embedded "num2word" package and now using "num2words" from pypi.
removed out-of-date TODO (use github for the official TODO list). added requirements.txt for installed packages.
setting default values for BooleanFields to make "manage check" happy.
fixing up date processing for paypal