columnNumHours.setSclass("hours-column");
columns.appendChild(columnNumHours);
NewDataSortableColumn columnHoursType = new NewDataSortableColumn();
columnHoursType.setLabel(_("Hours type"));
columnHoursType.setSclass("hours-type-column");
columns.appendChild(columnHoursType);
NewDataSortableColumn columnFinsihed = new NewDataSortableColumn();
columnFinsihed.setLabel(_("Done"));
columnFinsihed.setSclass("finished-column");
columnFinsihed.setTooltiptext(_("Task finished"));
NewDataSortableColumn columnCode = new NewDataSortableColumn();