[0.85] Upgrade + Fix datetime picker 


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21657 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] more work on #4189


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21658 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] minor fix for  #4318


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21659 35612d4c-9d10-0410-837c-bf9dd1be60d7
[0.85] Header of anonymous FAQ see #4476


git-svn-id: https://forge.indepnet.net/svn/glpi/branches/0.85-work@21661 35612d4c-9d10-0410-837c-bf9dd1be60d7