Fix object recurrence rule processing

plugins/libkolab/lib/kolab_format_event.php

@@ -118,9 +118,8 @@ class kolab_format_event extends kolab_format_xcal
 
         // read object properties
         $object += array(
-            'allday'      => $this->obj->start()->isDateOnly(),
-            'start'       => self::php_datetime($this->obj->start()),
             'end'         => self::php_datetime($this->obj->end()),
+            'allday'      => $this->obj->start()->isDateOnly(),
             'free_busy'   => $this->obj->transparency() ? 'free' : 'busy',  // TODO: transparency is only boolean
             'attendees'   => array(),
         );

plugins/libkolab/lib/kolab_format_task.php

@@ -89,10 +89,6 @@ class kolab_format_task extends kolab_format_xcal
 
         $object['complete'] = intval($this->obj->percentComplete());
 
-        // if start/end date is set
-        if ($dtstart = $this->obj->start())
-            $object['start'] = self::php_datetime($dtstart);
-
         // if due date is set
         if ($due = $this->obj->due())
             $object['due'] = self::php_datetime($due);

plugins/libkolab/lib/kolab_format_xcal.php

@@ -105,6 +105,7 @@ abstract class kolab_format_xcal extends kolab_format
             'sensitivity' => $sensitivity_map[$this->obj->classification()],
             'priority'    => $this->obj->priority(),
             'categories'  => self::vector2array($this->obj->categories()),
+            'start'       => self::php_datetime($this->obj->start()),
         );
 
         // read organizer and attendees