Manage Orders: Switch to translatable texts (#424)

Co-authored-by: Christian Georgi <chgeo@users.noreply.github.com>

fiori/app/_i18n/i18n.properties

@@ -16,10 +16,21 @@ PlaceOfDeath = Place of Death
 Age = Age
 Lifetime = Lifetime
 Authors = Authors
+
 Order = Order
 Orders = Orders
+OrderNo = Order Number
+OrderItems = Order Items
+Customer = Customer
+Product = Product
+ProductID = Product ID
+ProductTitle = Product Title
+UnitPrice = Unit Price
+Quantity = Quantity
+
 Price = Price
 Currency = Currency
+Date = Date
 Rating = Rating
 NumberOfReviews = Number of Reviews