mail: add allow_send_as to domain catchall

interface/web/mail/form/mail_domain_catchall.tform.php

interface/web/mail/lib/lang/ar_mail_domain_catchall.lng

interface/web/mail/lib/lang/bg_mail_domain_catchall.lng

interface/web/mail/lib/lang/br_mail_domain_catchall.lng

interface/web/mail/lib/lang/ca_mail_domain_catchall.lng

interface/web/mail/lib/lang/cz_mail_domain_catchall.lng

interface/web/mail/lib/lang/de_mail_domain_catchall.lng

interface/web/mail/lib/lang/dk_mail_domain_catchall.lng

interface/web/mail/lib/lang/el_mail_domain_catchall.lng

interface/web/mail/lib/lang/en_mail_domain_catchall.lng

interface/web/mail/lib/lang/es_mail_domain_catchall.lng

interface/web/mail/lib/lang/fi_mail_domain_catchall.lng

interface/web/mail/lib/lang/fr_mail_domain_catchall.lng

interface/web/mail/lib/lang/hr_mail_domain_catchall.lng

interface/web/mail/lib/lang/hu_mail_domain_catchall.lng

interface/web/mail/lib/lang/id_mail_domain_catchall.lng

interface/web/mail/lib/lang/it_mail_domain_catchall.lng

interface/web/mail/lib/lang/ja_mail_domain_catchall.lng

interface/web/mail/lib/lang/nl_mail_domain_catchall.lng

interface/web/mail/lib/lang/pl_mail_domain_catchall.lng