fixed broken watcher

src/js/config.js

@@ -7,6 +7,13 @@ const toBoolean=v => {
 	if(v=='false' || v==false) return false;
 	return true;
 };
+const notify=(key, value) => {
+	const interested=watchers[key];
+	if(interested) Object
+		.keys(interested)
+		.map(key => interested[key])
+		.forEach(fn => fn(key, value));
+};
 
 const get=key => {
 	let confVal=localStorage.getItem('config.'+key);
@@ -19,14 +26,12 @@ const getS=key => ''+get(key);
 
 const set=(key, value) => {
 	localStorage.setItem('config.'+key, value);
-	let interested=watchers[key];
-	if(interested) interested.forEach(watcher => watcher(key, value));
+	notify(key, value);
 };
 
 const remove=key => {
 	localStorage.removeItem('config.'+key, value);
-	let interested=watchers[key];
-	if(interested) interested.forEach(watcher => watcher(key, assets.get('config')[key]));
+	notify(key, assets.get('config')[key]);
 };
 const clear=() =>
 	Object