move automatic invoices to plugin

changes on deposit calculation

tiny changes on group order invoice pdf

app/views/orders/_articles.html.haml

@@ -35,9 +35,8 @@
               %td= "#{order_article.quantity} + #{order_article.tolerance}"
             - else
               %td= "#{order_article.quantity}"
-            %td{title: units_history_line(order_article, plain: true)}
-              = units
-              = pkg_helper order_article.price
+            = render "units_history", order_article: order_article, units: units
+
 %p
   = t '.prices_sum'
   = "#{number_to_currency(total_net)} / #{number_to_currency(total_gross)}"

app/views/orders/_units_history.haml

@@ -0,0 +1,3 @@
+%td{title: units_history_line(order_article, plain: true)}
+  = units
+  = pkg_helper order_article.price