Show supplier name for articles in stockit order.

app/views/group_orders/_form.html.haml

@@ -45,6 +45,8 @@
     %thead
       %tr
         %th Name
+        - if @order.stockit?
+          %th{style: 'width:120px'} Lieferant
         %th{style: "width:13px;"}
         %th{style: "width:4.5em;"} Preis
         %th{style: "width:4.5em;"} Einheit
@@ -66,6 +68,8 @@
         - order_articles.each do |order_article|
           %tr{class: "#{cycle('even', 'odd', name: 'articles')} order-article", valign: "top"}
             %td.name= order_article.article.name
+            - if @order.stockit?
+              %td= truncate order_article.article.supplier.name, length: 15
             %td= h order_article.article.origin
             %td= number_to_currency(@ordering_data[:order_articles][order_article.id][:price])
             %td= order_article.article.unit