[minor] display campaign field only if source is Campaign

erpnext/crm/doctype/opportunity/opportunity.json

@@ -1,5 +1,6 @@
 {
  "allow_copy": 0, 
+ "allow_guest_to_view": 0, 
  "allow_import": 1, 
  "allow_rename": 0, 
  "autoname": "naming_series:", 
@@ -834,6 +835,7 @@
    "bold": 0, 
    "collapsible": 0, 
    "columns": 0, 
+   "depends_on": "eval: doc.source==\"Campaign\"", 
    "description": "Enter name of campaign if source of enquiry is campaign", 
    "fieldname": "campaign", 
    "fieldtype": "Link", 
@@ -1139,18 +1141,18 @@
    "width": "150px"
   }
  ], 
+ "has_web_view": 0, 
  "hide_heading": 0, 
  "hide_toolbar": 0, 
  "icon": "fa fa-info-sign", 
  "idx": 195, 
  "image_view": 0, 
  "in_create": 0, 
- "in_dialog": 0, 
  "is_submittable": 0, 
  "issingle": 0, 
  "istable": 0, 
  "max_attachments": 0, 
- "modified": "2017-02-17 16:37:39.028830", 
+ "modified": "2017-03-12 21:55:21.598112", 
  "modified_by": "Administrator", 
  "module": "CRM", 
  "name": "Opportunity",