When creating/editing events, it seems that the current/existing timestart

is not pre-filled in the forms. This is a regression, no idea how and when
it happened. Investigating...

First of all let's get rid of this "HACK! Don't use!" function...

calendar/event.php

@@ -367,8 +367,6 @@
         break;
 
         case 'new':
-            set_default($form->timestart, -1);
-
             if($cal_y && $cal_m && $cal_d && checkdate($cal_m, $cal_d, $cal_y)) {
                 $form->timestart = make_timestamp($cal_y, $cal_m, $cal_d, 0, 0, 0);
             }