* 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/environment.rb

@@ -1,5 +1,14 @@
 # Load the rails application
 require File.expand_path('../application', __FILE__)
 
+path = Rails.root.join("config", "config.yml")
+
+begin
+  CONFIG = YAML.load_file(path)[Rails.env]
+rescue Exception
+  puts "Error while parsing config file #{path}"
+  CONFIG = Hash.new
+end
+
 # Initialize the rails application
 Osem::Application.initialize!