Added a line to Rakefile to suppress warning
Removed subrepo "contact-congress" - instead of directly referring to
files in a local subrepo, we will use a rake task to periodically
populate the database with the fields specified in these files.
Added ActiveRecord and mysql2 to project, in order to store fields and steps for filling out congressional forms
Adding 'enumerize' gem - allowing us to specify the field type of congress fields
Creating the CongressMemberField model & migration