= link_to safe_params.merge(rss_url_options), class: 'btn has-tooltip', data: { container: 'body' }, title: 'Subscribe to RSS feed' do
  = icon('rss')
= link_to safe_params.merge(calendar_url_options), class: 'btn has-tooltip', data: { container: 'body' }, title: 'Subscribe to calendar' do
  = custom_icon('icon_calendar')