FIXES:

* Inflections für Thema/Themen etc.
  * Korrigierte Views

app/models/themengruppe.rb

@@ -1,8 +1,9 @@
 class Themengruppe < ActiveRecord::Base
-  has_paper_trail
   attr_accessible :text, :title
   has_many :themen
   has_many :fragen, through: :themen
   
   validates :title, :presence => true
+
+  translates :title,:text, :versioning =>true, :fallbacks_for_empty_translations => true
 end