feat(accounts): set up django-cities-light

- Will provide future address info for user input
- Limit cities to Brazil only
feat(accounts): load some Brazil cities into a test fixture
feat(accounts): introduce User Address modelling
feat(accounts): add User Address edit functionality
feat(common): bind CoffeeScript to our django-pipeline setup
feat(accounts): add CoffeeScript configuration
feat(accounts): add delete user view
fix(accounts): add password field to delete user form
feat(feedback): add feedback app
feat(accounts): add stylus file for user removal page
feat(accounts): import files
feat(accounts): set grid to the content
fix(accounts): change markup order and add markup for the title
feat(accounts): set spacings to form and content
feat(accounts): add style for call-to-action button, link and page title
feat(accounts): enhance state/city lists' labels

django-cities-light provide very verbose __unicode__ methods for both
Region and City models. Our <select>s must have the labels cleaned up.
PS: this might need performance enhancements later.
feat(*): set up bower for providing 3rd-party front-end libs
feat(*): add a pipeline endpoint for 3rd-party js libs
feat(*): add jQuery 2.1.1 to bower dependencies
feat(accounts): filter cities options upon state selection