Extend permalink/permaview to optionally copy URL to the clipboard

Fixes #3255

core/modules/utils/dom/dom.js

@@ -263,4 +263,9 @@ exports.copyToClipboard = function(text,options) {
 	document.body.removeChild(textArea);
 };
 
+exports.getLocationPath = function() {
+	return window.location.toString().split("#")[0];
+};
+
+
 })();