Rm'ed a couple unused files.
Fixed oversight but in Issue.init_from_issue_template.
Put AASHE specific stuff back.

Into settings.py, requirements.txt, and urls.py.

The current plan is to

    1. package up the apps as django apps available for install, and
    2. break the `bulletin` project directory here out into its
       own repo.

Then we can make our own local changes in the bulletin project
repo without having to fork the django-bulletin apps (which we'll
install as a dependency of the bulletin project, i.e., via
requirements.txt).