Replaced rfpdf with prawn and prawnto. Start to convert pdf-views.

app/views/orders/articlesPdf.pdf.prawn

@@ -0,0 +1,38 @@
+# Get ActiveRecord objects
+order_articles = @order.order_article_results
+end_date = @order.ends.strftime('%d.%m.%Y')
+title = "#{@order.name} | beendet am #{end_date}"
+
+# Define header and footer
+pdf.header [pdf.margin_box.left,pdf.margin_box.top+30] do
+  pdf.text title, :size => 10, :align => :center
+end
+pdf.footer [pdf.margin_box.left, pdf.margin_box.bottom-5] do
+  pdf.stroke_horizontal_rule
+  pdf.text "Seite #{pdf.page_count}", :size => 8
+end
+
+# Start rendering
+pdf.table [["Bestellgruppe", "Menge", "Preis"]],
+  :font_size => 8,
+  :font_style => :italic,
+  :widths => { 0 => 200, 1 => 40, 2 => 40 }
+pdf.move_down 10
+
+for article in order_articles
+  pdf.text "#{article.name} (#{article.unit} | #{article.unit_quantity.to_s} | #{number_to_currency(article.gross_price)})",
+    :style => :bold, :size => 10
+  pdf.move_down 5
+  data = []
+  for result in article.group_order_article_results
+    data << [result.group_order_result.group_name,
+            result.quantity,
+            article.gross_price * result.quantity]
+  end
+
+  pdf.table data,
+    :font_size => 8,
+    :widths => { 0 => 200, 1 => 40, 2 => 40 },
+    :border_style => :grid
+  pdf.move_down 10
+end