Fix infinite speedgrader redirects when header_position = 0 (#1291)
Fix infinite speedgrader redirects when header_position = 0 (#1291)


autolab/Autolab,autolab/Autolab,cg2v/Autolab,cg2v/Autolab,cg2v/Autolab,autolab/Autolab,autolab/Autolab,cg2v/Autolab,autolab/Autolab,cg2v/Autolab,autolab/Autolab,cg2v/Autolab