Merge pull request #45 from diceydawg/umass_branch

Got rid of placeholder map
added support for username and added migration files for the user model also
updated the login pages, edit account, and sign-up to reflect changes.
modified user model removed resourceify
Got rid of proof of concept model cities.  Gmaps implemented for location_data table.  Fixed migration problem by commenting out tables that were not created in defaults and nils.