Add city attribute to sponsor
Add city field to sponsor views
Create Sponsor.all_cities method
Additional validation on sponsor.city; improve city field in sponsor form; existing features passing
Add feature for adding new city; change Sponsor#set_city for better error message
Add scenario to test that new city names are added to drop-down box; OSRA-206
Add spec for **Add New** as city name raising an error if no new_city_name
Anonymize sponsor.feature
Resolve migration version numbers after rebase
Code Reveiw: define Sponsor::NEW_CITY_MENU_OPTION constant; replace !blank? with present?; reverse renaming of migrations
Merge pull request #150 from NikitaAvvakumov/sponsor_city_attribute

Sponsor city attribute
OSRA-206 #resolve