[minor] currency field in list view for item price

erpnext/stock/doctype/item_price/item_price.json

@@ -77,6 +77,7 @@
    "fieldname": "currency",
    "fieldtype": "Link",
    "hidden": 0,
+   "in_list_view": 1,
    "label": "Currency",
    "options": "Currency",
    "permlevel": 0,
@@ -119,7 +120,7 @@
  "idx": 1,
  "in_create": 0,
  "istable": 0,
- "modified": "2015-05-26 03:15:02.324161", 
+ "modified": "2015-07-29 14:53:58.851413",
  "modified_by": "Administrator",
  "module": "Stock",
  "name": "Item Price",