* 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/development.rb

@@ -1,6 +1,9 @@
 Osem::Application.configure do
   # Settings specified here will take precedence over those in config/application.rb
 
+  # Use letter_opener
+  config.action_mailer.delivery_method = :letter_opener
+
   # In the development environment your application's code is reloaded on
   # every request. This slows down response time but is perfect for development
   # since you don't have to restart the web server when you make code changes.
@@ -35,5 +38,5 @@ Osem::Application.configure do
   # Expands the lines which load the assets
   config.assets.debug = true
 
-  config.action_mailer.default_url_options = { :host => 'localhost:3000' }
+  config.action_mailer.default_url_options = { :host => CONFIG['url_for_emails'] }
 end

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