Fix events CRUD for standalone events and add events to admin menu

- event_params now permits title, description, is_primary
- event_information helper lists all node.events, not just the first
- Occurrence.generate handles nil node (standalone events)
- Page.aggregate order_by title uses correlated subquery to avoid
  GROUP BY conflict with tag-filter path; order_direction whitelisted
  to ASC/DESC to prevent SQL injection
- Events link added to admin menu bar
- events/index shows title, is_primary; drops latitude/longitude columns

1 files changed, 1 insertions, 1 deletions

diff --git a/app/controllers/events_controller.rb b/app/controllers/events_controller.rb
index f50da3e..3a60cf9 100644
--- a/app/controllers/events_controller.rb
+++ b/app/controllers/events_controller.rb
@@ -94,6 +94,6 @@ class EventsController < ApplicationController
   private
 
     def event_params
-      params.require(:event).permit(:start_time, :end_time, :rrule, :custom_rrule, :allday, :url, :latitude, :longitude, :node_id, :location)
+      params.require(:event).permit(:title, :description, :is_primary, :start_time, :end_time, :rrule, :custom_rrule, :allday, :url, :latitude, :longitude, :node_id, :location)
     end
 end