Added registration.
Fixed song display
Updated title in header for song display
Added translation in every templates, models and views
Added processor for translations
Changed regex for slugs in URL (see issues #14)
Changed language for representation of songbooks_by_user
Missing tranlation of profile
Added URL pattern
Added Songbooks creation form and view.
Some verboses names for Songbook creation
Delete the .sb file from file system when songbook is deleted.
Fixed the link between user and Profile models
Added basics for songbooks display and fixed link between songbooks and
user.profile
Modification du modèle songbook avec les attributs slug et is_public
Added list and detail view for songbooks.
Merge
Import now works
Parsing and importing from songbook now works #7
Add a (non versioned) local_settings.py file that allows to override some of the settings in settings.py