small translation updates

config/locales/de.yml

@@ -571,7 +571,7 @@ de:
         invoice_date: ! 'Rechnungsdatum:'
         invoice_number: ! 'Rechnungsnummer:'
         minus_refund_calculated: ! '- Pfand berechnet:'
-        new: Neue Rechnung erstellen
+        new: neue Rechnung erstellen
         new_body: ! 'Eine Rechnung für diese Bestellung anlegen:'
         plus_refund_credited: ! '+ Pfand gutgeschrieben:'
         refund_adjusted_amount: ! 'pfandbereinigter Betrag:'

config/locales/en.yml

@@ -562,8 +562,8 @@ en:
       group_order_articles:
         add_group: Add group
         group: Group
-        total: Subtotal
-        total_fc: Sum (FC-Price)
+        total: Total costs
+        total_fc: Sum (FC-price)
         units: Units
       index:
         title: Closed orders
@@ -573,7 +573,7 @@ en:
         invoice_date: ! 'Invoice date:'
         invoice_number: ! 'Invoice number:'
         minus_refund_calculated: ! '- deposit charged:'
-        new: Create new invoice
+        new: create new invoice
         new_body: ! 'Create an invoice for this order:'
         plus_refund_credited: ! '+ deposit returned:'
         refund_adjusted_amount: ! 'amount adjusted for refund:'

config/locales/nl.yml

@@ -538,7 +538,7 @@ nl:
       group_order_articles:
         add_group: Huishouden toevoegen
         group: Huishouden
-        total: Subtotaal
+        total: Totale prijs
         total_fc: Som (FC-prijs)
         units: Eenheden
       index:
@@ -549,7 +549,7 @@ nl:
         invoice_date: ! 'Factuurdatum:'
         invoice_number: ! 'Factuurnummer:'
         minus_refund_calculated: ! '- statiegeld berekend:'
-        new: Factuur toevoegen
+        new: factuur toevoegen
         new_body: ! 'Een factuur aan deze rekening toevoegen:'
         plus_refund_credited: ! '+ statiegeld teruggekregen:'
         refund_adjusted_amount: ! 'bedrag gecorrigeerd voor statiegeld:'