Add 'open today' sidebar widget and open days in chapter lists

- open_erfas_today helper: samples 3 random open-day-tagged occurrences
  of the current day; widget hidden entirely on days without open
  chapters; heading shows current weekday
- content/_open_erfas_today partial rendered in right column above
  tags and featured articles
- _chapter partial: open-day schedules (event_schedule_text) shown
  inline in aggregated chapter lists with 'Offene Tage' label
- ccc.css: open_erfas_today added to existing right-column widget
  selector groups (headings, lists, links)

1 files changed, 11 insertions, 0 deletions

diff --git a/app/views/content/_open_erfas_today.html.erb b/app/views/content/_open_erfas_today.html.erb
new file mode 100644
index 0000000..3448af3
--- /dev/null
+++ b/app/views/content/_open_erfas_today.html.erb
@@ -0,0 +1,11 @@
+<div id="open_erfas_today">
+  <h2><%= t(:open_today) %></h2>
+  <ul class="teasertext">
+    <% occurrences.each do |occurrence| %>
+      <li>
+        <%= link_to_path occurrence.node.head.title, occurrence.node.unique_name %>
+        <span class="event_time"><%= occurrence.start_time.strftime("%H:%M") %></span>
+      </li>
+    <% end %>
+  </ul>
+</div>