[0.85] fix strtr for php 5.4

git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21452 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] fix notification template for numeric tag - fixed #4415

git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21455 35612d4c-9d10-0410-837c-bf9dd1be60d7