add context for FB auth id and mixin FB to app - todo: we should be mixing in this class in projects which extend BB CLUB-569
update grunt packages
add basic flash message for site wide notifcation, eg logins CLUB-573
remove debug code CLUB-573
fix closing signup modal CLUB-567
update controllers/templates to use currentUser property now on all controllers
small fix for missing bracket
remove currentUser from controller 'needs' as it is now available on all controllers
add example flash message after authentication
add correct settings key for FB auth
Merge pull request #669 from onepercentclub/feature/club-569

Various fixes for user flow