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)

2 files changed, 4 insertions, 0 deletions

diff --git a/config/locales/de.yml b/config/locales/de.yml
index 9719a1c..e8ae4e1 100644
--- a/config/locales/de.yml
+++ b/config/locales/de.yml
@@ -11,7 +11,9 @@ de:
   event_schedule_unrecognized: "Termin-Regel nicht automatisch lesbar"
   event_schedule_none: "Kein Termin"
   open_days: "Offene Tage"
+  open_days_label: "Offene Tage"
   upcoming_events: "Weitere Termine"
+  open_today: "Heute dabei"
   date:
     formats:
       default: "%d.%m.%Y"
diff --git a/config/locales/en.yml b/config/locales/en.yml
index aa477f0..980a6b8 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -12,7 +12,9 @@ en:
   event_schedule_unrecognized: "Schedule not automatically readable"
   event_schedule_none: "No schedule"
   open_days: "Open days"
+  open_days_label: "Open days"
   upcoming_events: "Upcoming events"
+  open_today: "Open today"
 
   time:
     formats: