minor UX modifications

lib/editevent.dart

@@ -34,7 +34,7 @@ class _EditEventPageState extends State<EditEvent>  {
   @override
   void dispose() async {
     try {
-      _overlayEntry.remove();
+      //_overlayEntry.remove();
     }catch(e){
       debugPrint('Dispose error on overlay remove: ' + e.toString());
     }
@@ -153,7 +153,7 @@ class _EditEventPageState extends State<EditEvent>  {
     }
 
     _overlayCloseTimer = Timer(
-      const Duration(seconds: 3),
+      const Duration(seconds: 3 ),
           () {
         try {
           _overlayEntry.remove(); // Allow only one Overlay Popup. NOTE: Is this a quick an dirty or a proper solution?