Correct spelling of latitude in user/models.py
Add start and end lat/long fields on Item(), overwrite Item.save() to add start and end lat/long based on respective addresses, add Item.get_start_address() and Item.get_end_address() to return a tuple of the full address
Update fake addresses in users/tests.py to real addresses so that geocoding can be performed
Add start_lat and start_long assertion tests to ItemTestCase.test_item_create() to assert that the lat/longs are being stored when an item is saved