frio: improvements it js jot behavior

- cache the original jot everytime (to restore it after modal close)
- possibility to edit event items

view/theme/frio/js/theme.js

@@ -1,3 +1,6 @@
+
+var jotcache = ''; //The jot cache. We use it as cache to restore old/original jot content
+
 $(document).ready(function(){
 	//fade in/out based on scrollTop value
 	$(window).scroll(function () {