sqlalchemy upgrade broke a bunch of stuff. Decided just to update it. Now uses alembic for database migrations instead of sqlalchemy-migrate.
Built basic sell page and function which creates a listing in the database. Edited listing model in models.py slightly.
edited gitignore to ignore virtualenv files
images now store properly in database using sell function in views.py
Got image display from database to work using 'get_image' view. Added price field to Listing class.
Rewrote header.html. Deleted duplicate files.