Fixed missing DocType info for Purchase Items (#15152)

* Made Purchase Invoice Items' Batch No and Serial No fields non copyable.

* Added appropriate currency field options to Purchase...Items DocFields:
-Landed Cost Voucher Amount
-Billed Amt

erpnext/accounts/doctype/purchase_invoice_item/purchase_invoice_item.json

@@ -1374,7 +1374,7 @@
    "in_standard_filter": 0, 
    "label": "Batch No", 
    "length": 0, 
-   "no_copy": 0, 
+   "no_copy": 1, 
    "options": "Batch", 
    "permlevel": 0, 
    "precision": "", 
@@ -1437,7 +1437,7 @@
    "in_standard_filter": 0, 
    "label": "Serial No", 
    "length": 0, 
-   "no_copy": 0, 
+   "no_copy": 1, 
    "permlevel": 0, 
    "precision": "", 
    "print_hide": 0, 
@@ -2291,7 +2291,7 @@
  "issingle": 0, 
  "istable": 1, 
  "max_attachments": 0, 
- "modified": "2018-05-16 17:50:21.957780", 
+ "modified": "2018-07-22 18:00:51.377605", 
  "modified_by": "Administrator", 
  "module": "Accounts", 
  "name": "Purchase Invoice Item", 
@@ -2305,4 +2305,4 @@
  "sort_order": "DESC", 
  "track_changes": 0, 
  "track_seen": 0
-}
+}

erpnext/stock/doctype/purchase_receipt_item/purchase_receipt_item.json

@@ -2203,6 +2203,7 @@
    "label": "Billed Amt", 
    "length": 0, 
    "no_copy": 1, 
+   "options": "currency", 
    "permlevel": 0, 
    "precision": "", 
    "print_hide": 1, 
@@ -2234,6 +2235,7 @@
    "label": "Landed Cost Voucher Amount", 
    "length": 0, 
    "no_copy": 1, 
+   "options": "Company:company:default_currency", 
    "permlevel": 0, 
    "print_hide": 1, 
    "print_hide_if_no_value": 0, 
@@ -2494,7 +2496,7 @@
  "issingle": 0, 
  "istable": 1, 
  "max_attachments": 0, 
- "modified": "2018-05-25 13:42:05.061386", 
+ "modified": "2018-08-08 06:56:45.396664", 
  "modified_by": "Administrator", 
  "module": "Stock", 
  "name": "Purchase Receipt Item", 
@@ -2508,4 +2510,4 @@
  "sort_order": "DESC", 
  "track_changes": 0, 
  "track_seen": 0
-}
+}