Move get url to self referential function

src/js/core/_core.js

@@ -102,7 +102,19 @@ const getURLVars = () => {
 }
 
 module.exports = {
-	url: getURLVars(),
+	url: (() => {
+		var v = {};
+		if (location.search.length > 0) {
+			var qs = (location.search.substr(1)).split("&");
+			for (var i = 0; i < qs.length; i++) {
+				var t = qs[i].split("=");
+				if (t[1].length > 0) {
+					v[t[0]] = decodeURIComponent(t[1].replace(/\+/g, '%20'));
+				}
+			}
+		}
+		return v;
+	})(),
 	cookie: {	
 		set: (name, value, expires, path, domain, secure) => {
 			switch(typeof expires) {