* Update devise to latest version

* use letter_opener for mails in development
* bring back the flash
* fix redirect loop for logging in
* move all mailer/devise settings to config/config.yml

config/environments/production.rb

@@ -63,4 +63,7 @@ Osem::Application.configure do
   # Log the query plan for queries taking more than this (works
   # with SQLite, MySQL, and PostgreSQL)
   # config.active_record.auto_explain_threshold_in_seconds = 0.5
+  
+  config.action_mailer.default_url_options = { :host => CONFIG['url_for_emails'] }
+
 end