pg, acts-as-taggable-on, ancestry, removing mongo
fix config/application.rb for AR
ignore database.yml, remove mongoid.yml
use AR for devise
category, communication model and migrations
coordonnee and coord_category models and migrations
fix page, user models and migrations
fix pages factory
removing mongoid from spec_helper.rb
readd devise
add rolify for user, fix auth specs
fix users admin
removing mongoid locales
fix admin/communications
fix coordonnees browsing
adding friendly_id
adding friendly_id and ancestry to pages
fix communications form
fix users state locale
fix admin/coordonnees