Replace 'own' js table sorting by stupidtable plugin

app/views/deliveries/_stock_change_fields.html.haml

@@ -1,7 +1,7 @@
 - stock_change = f.object
 - stock_article = stock_change.stock_article
 %tr{:id => "stock_change_stock_article_#{stock_article.id}", :data => {:id => stock_article.id}}
-  %td.sort-by-name
+  %td
     %span.stock_article_name= stock_change.stock_article.name
     = f.association :stock_article, :as => :hidden
   %td.price{:data => {:toggle => :tooltip, :title => render(:partial => 'shared/article_price_info', :locals => {:article => stock_article})}}= number_to_currency stock_article.price