[0.85] #4385: unaffect


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21487 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] #4385: Don't propose update of itemtype that does not support update


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21488 35612d4c-9d10-0410-837c-bf9dd1be60d7