[0.85] Transfer items to massiveaction modal window (see #4385)


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21478 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] Move executeMassiveActions to specific class (see #4385)


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21479 35612d4c-9d10-0410-837c-bf9dd1be60d7