Allow spaces in property names in text references

core/modules/utils/utils.js

@@ -379,7 +379,7 @@ Returns an object with the following fields, all optional:
 */
 exports.parseTextReference = function(textRef) {
 	// Separate out the title, field name and/or JSON indices
-	var reTextRef = /^\s*([^!#]+)?(?:(?:!!([^\s]+))|(?:##([^\s]+)))?\s*/mg,
+	var reTextRef = /^\s*([^!#]+)?(?:(?:!!([^\s]+))|(?:##(.+)))?\s*/mg,
 		match = reTextRef.exec(textRef);
 	if(match && reTextRef.lastIndex === textRef.length) {
 		// Return the parts