Genderchanged string 'Lieferant'

* Since s.b. started this already. I changed every string 'Lieferant' to
 'Lieferantin' to give note on female existance in this world :-)

app/views/ordering/_order_head.haml

@@ -8,7 +8,7 @@
       %tr{:valign => "top"}
         %td{:width => "60%"}
           %p
-            %b Lieferant:
+            %b Lieferantin:
             =h @order.name
           %p
             %b Ende:

app/views/ordering/_orders.html.haml

@@ -3,7 +3,7 @@
 %table.list
   %thead
     %tr
-      %th Lieferant
+      %th Lieferantin
       %th Ende
       %th Summe
   %tbody

app/views/ordering/my_order_result.haml

@@ -15,7 +15,7 @@
       %tr{:valign => "top"}
         %td{:style => "width:50%"}
           %p
-            Lieferant:
+            Lieferantin:
             %b=h @order.name
           - unless @order.note.blank?
             %p