Added new ArrayList due add in list taken from DynamicQuery cause UnsupportedOperationException

[maucel89]

Added new ArrayList due add in list taken from DynamicQuery cause UnsupportedOperationException in layouts.add method:

if (checkedPlids.add(userGroupPlid)) {
	layouts.add(userGroupLayout);
	checkParentLayoutIds.add(userGroupLayout.getLayoutId());
}