Implemented: EZP-23045: In the admin interface: make it possible to sort by visibility
Merge pull request #1002 from patrickallaert/EZP-23045

Implemented: EZP-23045: In the admin interface: make it possible to sort by visibility
Fix EZP-23528: eZContentObjectTreeNode::createAttributeFilterSQLStrings() returns invalid 'in'/'not in' SQL statements