seminar item (for item list) partial.
I18n for flash message after searching.
add error handler and view for 404.
add impressum route and view.
add dusty menu implementation and view.
simplify menu view.
set menu in more places.
rename class_categories helper in menu.
freshen categories view.
update views
add category url helper
add datehelper and specs.
update seminar helper e.g. with url helper.
in referee view split seminars in future and past seminars.
add short description and important web notice to seminar model.
add translations.
update application layout, refactored menu in own template, footer.
improved seminar list item view.
update test seed data.
add and update specs.