[4.5] Fix the ALTER TABLE (#4097)
* Fix the ALTER TABLE
when $apps[$x]['db'][$y]['fields'][$z]['name'] is an array, you dont try to get the ['text'] index therefore fields such as v_xml_cdr.xml_uuid, v_destinations.destination_type and v_destinations.destination_number wont be created when upgrading.
This patch fixes it
* Update schema.php