getAvailableLayouts ignores permissions of view methods

[iham]

this section completely ignores checks against user permission and given permission on the menuitem, no matter what permission the current user has.

even when trying to fix the code title = item and item.title or midhere will add the menuitem to the list.

instead

                if item is not None:
                    result.append((mid, item.title or mid))

should fix the problem once and for all ;)