added test functions to and moved cron.py.  settings.py changes to crontab.  added migrations to .gitignore file.
Merge branch 'master' into jwhite
cron.py:  notification functions very close to done.  crontab.txt: put functions used to test crontab.  settings.py: minor changes to crontab settings.
Merge branch 'master' into jwhite
Merge branch 'jwhite'