Feature register cities from other country(Venezuela)

Added top 50 venezuelan cities to database. Added a small rake task to add them to the database.

The rake task is the following: rake metropoli:seed_city country=ve

Also removed hard coded countries from location autocomplete app(In jobs form). Now the hidden city input should appear for all the countries that have registered cities.

https://www.pivotaltracker.com/story/show/38435477