after user deletion, 13 pending user records remain in today table; to purge those records I've introduced quick fix in deleteObject.php:

/** ===========================================================================
 * Delete the current object : call corresponding method in SqlElement Class
 */

require_once "../tool/projeqtor.php";

// Get the object class from request
if (! array_key_exists('objectClassName',$_REQUEST)) {
  throwError('className parameter not found in REQUEST');
}
$className=$_REQUEST['objectClassName'];
if ($className=='Project') {
  Project::$_deleteProjectInProgress=true;
}

$objectId = RequestHandler::getId('objectId');

// Get the object from session(last status before change)
$fromContextMenu = RequestHandler::getBoolean('fromContextMenu');
if($fromContextMenu){
  $obj=new $className($objectId);
}else{
  $obj=SqlElement::getCurrentObject(null,null,true,false);
}
if (! is_object($obj)) {
  throwError('last saved object is not a real object');
}

// compare expected class with object class
if ($className!=get_class($obj)) {
  throwError('last save object (' . get_class($obj) . ') is not of the expected class (' . $className . ').');
}
if (array_key_exists('confirmed',$_REQUEST) ) {
  if ($_REQUEST['confirmed']=='true') {
      SqlElement::setDeleteConfirmed();
  }
}
Sql::beginTransaction();

$obj=new $className($obj->id); // Get the last saved version, to fetch last version for array of objects
$peName=$className.'PlanningElement';
$topItemType=null;
$topItemId=null;
// delete from database
if (property_exists($obj,$peName)) {
  PlanningElement::$_noDispatch=true;
  $topItemType=$obj->$peName->topRefType;
  $topItemId=$obj->$peName->topRefId;
}
$deleteObjectInProgress=true;
$result=$obj->delete();
$resultStatus=getLastOperationStatus($result);
if ($resultStatus=='OK' and $topItemType and $topItemId) {
  PlanningElement::$_noDispatch=false;
  PlanningElement::updateSynthesis($topItemType, $topItemId);
  $pe=SqlElement::getSingleSqlElementFromCriteria('PlanningElement', array('refType'=>$topItemType,'refId'=>$topItemId));
  $pe->renumberWbs();
}
BudgetElement::dispatchFinalize();

//mk add
if ($className=='User') {
  $idUser=$_REQUEST['id'];
  $tod=new Today();
  $crit= array('idUser'=>$idUser);
  $rec=$tod->getSqlElementsFromCriteria($crit);
  foreach ($rec as $uid) {
      $uid->delete();
  }
}
//end mk add

// Message of correct saving
if ($resultStatus=="ERROR") {
    Sql::rollbackTransaction();
  echo '

';
} else if ($resultStatus=="OK" ) {
    Sql::commitTransaction();
  echo '

';
  SqlElement::unsetCurrentObject();
} else  if ($resultStatus=="INVALID") {
  Sql::rollbackTransaction();
  echo '

';
} else {
    Sql::commitTransaction();
  echo '

';
}
echo '';