We have in config-default :
$config['allowmandbackwards'] = 1; // Allow moving backwards (ie: << prev) through survey if a mandatory question
// has not been answered. 1=Allow, 0=Deny
But if we set to 0 : previous button don't throw error
Steps To Reproduce
Set config
'config'=>array(
'debug'=>2,
'debugsql'=>0,
'allowmandbackwards'=> 0,
)
Import included survey ( 2 question)
Move previous at firt or second question
Additional Information
There is no test done static function NavigateBackwards of config (and no validation of actual group)
