FIXES:

* Inflections für Thema/Themen etc.
  * Korrigierte Views

app/models/thema.rb

@@ -1,10 +1,11 @@
 class Thema < ActiveRecord::Base
-  has_paper_trail
   attr_accessible :text, :title
   has_many :fragen
   has_many :attachments
-  belongs_to :themengruppe
+  belongs_to :themengruppe, :foreign_key => "themengruppe_id"
   
   validates :themengruppe, :presence => true
   validates :title, :presence => true
+
+  translates :title,:text, :versioning =>true, :fallbacks_for_empty_translations => true
 end