Updated Gruntfile + added makemessage custom command
Added bower config to repository
Changed path to vendor in bowerrc
Changed angular-translate-loader-{url} to {static-files} in bower.json
Updated angular-translate lib
[front-end] Updated locales + dependencies
Added loader-static-files to home.dj.html + added STATIC_URL variable in base.dj.html
Fixed empty string issue for model translation
_('') -> return the django.po header description
Resolved conflict for app.coffee