i18n for referee page.
make category description Text instead of String.
add registration helpers for other persons and class for invalid field.
fix mail part of config, needs keys not strings.
add mailer and mail templates.
show example static smtp delivery config.
add translations for registration failures, mails.
add host (notification) mail to seminar model.
add image_url and uuid to referee model.
add participants_string helper to registration.
add notification_address to config.
update LICENSE.TXT to list files included from other sources.
add legacy-system spaghettis to registration helper, use mailers.
depend on rest_client and mention legacy-system dependence in README.
fix ad(d)ress typos.
in registration view, do not use accordion, as room wishes should be made obligatory.
whitespace
adding the meaty registration route, and error mailer action.