fixed release with updated external library reformat code Issue #2724611 by sandip27: Undefined variable in error message update Yubico.php Issue #2495427 by GJdan: Strict warnings when adding a new yubikey id Issue #2444325 by olofjohansson: Fix call to fetchField() when confirming a lost YubiKey Issue #2724611 by sandip27 : Fixed Undefined Variable and Syntax error in form_set_error