* 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

app/assets/stylesheets/osem.css

@@ -7,7 +7,7 @@ body {
   margin-bottom: 60px;
 }
 
-body > #content {
+body > #messages {
 padding: 60px 15px 0;
 }
 

app/controllers/application_controller.rb

@@ -9,7 +9,13 @@ class ApplicationController < ActionController::Base
   end
 
   def after_sign_in_path_for(resource)
-    session[:return_to]
+    if not session[:return_to].start_with?('/accounts')
+      logger.debug "Returning to #{session[:return_to]}"
+      session[:return_to]
+    else
+      logger.debug "Not returning to #{session[:return_to]} because it would loop"
+      super
+    end
   end
 
   def get_conferences

app/models/email_settings.rb

@@ -8,12 +8,12 @@ class EmailSettings < ActiveRecord::Base
         "email" => person.email,
         "name" => person.public_name,
         "conference" => conference.title,
-        "registrationlink" => Rails.application.routes.url_helpers.register_conference_url(conference.short_title, :host => OSEM_CONFIG["url_for_emails"])
+        "registrationlink" => Rails.application.routes.url_helpers.register_conference_url(conference.short_title, :host => CONFIG["url_for_emails"])
     }
 
     if !event.nil?
       h["eventtitle"] = event.title
-      h["proposalslink"] = Rails.application.routes.url_helpers.conference_proposal_url(conference.short_title, event, :host => OSEM_CONFIG["url_for_emails"])
+      h["proposalslink"] = Rails.application.routes.url_helpers.conference_proposal_url(conference.short_title, event, :host => CONFIG["url_for_emails"])
     end
     h
   end