A few fixups for the registration content

include/client/login.inc.php

include/client/register.confirm.inc.php

include/client/register.confirmed.inc.php

include/i18n/en_US/templates/page/banner-client.yaml

include/i18n/en_US/templates/page/pwreset-client.yaml

include/i18n/en_US/templates/page/pwreset-staff.yaml

include/i18n/en_US/templates/page/registration-staff.yaml

include/staff/login.tpl.php