i18n cleanup (affects foodcoops#137)

config/locales/en.yml

@@ -95,8 +95,10 @@ en:
       stock_article:
         available: Available
         price: Price
+        quantity: In stock
         quantity_available: Available quantity
         quantity_available_short: Avail.
+        quantity_ordered: Ordered
       stock_taking:
         date: Date
         note: Note
@@ -1428,16 +1430,6 @@ en:
     form:
       price_hint: To avoid choas, it is not possible to edit the prices of already added stock articles until further notice.
     index:
-      article:
-        article: Article
-        available: available
-        category: Category
-        ordered: ordered
-        price: Price
-        stock: In stock
-        supplier: Supplier
-        unit: Unit
-        vat: VAT
       confirm_delete: Are you sure you want to delete?
       new_delivery: New delivery ...
       new_stock_article: Add new stock article