Add login link to navbar, reg link to login
Minor stylistic changes to login form
Remove inclusion of IMDBpy submodule fork - switch to PyPI module
Removed unused comingSoon files
Support a separate settings_private.py for local settings
Add a Guest model
Allow guest signins with autocomplete

This adds a dependency on django-autocomplete-light
Show whose guest list they are on
Move populate script into manage.py
In the process, removed the python path hack
Reorder .gitignore to make sense; add .virtualenv
Fix README to be consistent with Wiki
Switch license to GNU GPLv3+.

This was performed after receiving approval from all major Dormbase
contributors in the thread with Message-ID:
    <CAKoptiw2na1R3DeBcnSUHN2JdZYCELWdPxrssL3o8ghG4hwSqw@mail.gmail.com>

The aformentioned and its replies can be viewed via the "Discuss"
conferencing system in the "dormbase" meeting on charon.mit.edu,
starting with message 0100.
Remove all mentions of the Affero GPL from headers.
Support django-haystack 2.x

Remove HAYSTACK_SITECONF since it is deprecated in future releases.

Convert HAYSTACK_SEARCH_ENGINE to HAYSTACK_CONNECTIONS

See https://django-haystack.readthedocs.org/en/v2.1.0/migration_from_1_to_2.html