[0.84] add type of contract in search engine for an item - see #4764

git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.84-bugfixes@22533 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.84] revert + fix for #4765


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.84-bugfixes@22536 35612d4c-9d10-0410-837c-bf9dd1be60d7