Select only mandatory childtable fields on Select Mandatory (#2092)

frappe/core/page/data_import_tool/data_import_tool.js

@@ -42,11 +42,15 @@ frappe.DataImportTool = Class.extend({
 				if(me.doctype) {
 
 					// render select columns
-					var doctype_list = [frappe.get_doc('DocType', me.doctype)];
+					var parent_doctype = frappe.get_doc('DocType', me.doctype);
+					parent_doctype["reqd"] = true;
+					var doctype_list = [parent_doctype];
+					
 					frappe.meta.get_table_fields(me.doctype).forEach(function(df) {
-						doctype_list.push(frappe.get_doc('DocType', df.options));
+						var d = frappe.get_doc('DocType', df.options);
+						d["reqd"]=df.reqd;
+						doctype_list.push(d);						
 					});
-
 					$(frappe.render_template("data_import_tool_columns", {doctype_list: doctype_list}))
 						.appendTo(me.select_columns.empty());
 				}

frappe/core/page/data_import_tool/data_import_tool_columns.html

@@ -4,6 +4,7 @@
 	<div class="row">
 		{% for f in doctype.fields %}
 		{% if (frappe.model.no_value_type.indexOf(f.fieldtype)===-1) %}
+		{% doctype.reqd||(f.reqd=0);%}		
 		<div class="col-sm-4">
             <div class="checkbox" style="margin: 5px 0px;">
                 <label>