added storageLocation property to items

Additions:
- added storageLocation property to classes
- added storageLocation field to template
- added localization

Changes:
- changed default values for item string properties to "-"

Fixes:
- fixed CSS side-property flex properties
  such that new text field is properly shown
- fixed for="..." setting for item's data.price label

src/lang/en.json

@@ -12,6 +12,7 @@
     "DS4.AttackTypeMeleeRanged": "Melee / Ranged",
     "DS4.Quantity": "Quantity",
     "DS4.PriceGold": "Price (Gold)",
+    "DS4.StorageLocation": "Stored at",
     "DS4.ItemAvailability": "Availability",
     "DS4.ItemAvailabilityHamlet": "Hamlet",
     "DS4.ItemAvailabilityVilage": "Village",