[0.85] clean background


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@20191 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] navigation header + minor fix


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@20193 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] fix unserialize use


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@20194 35612d4c-9d10-0410-837c-bf9dd1be60d7