Add ability to export attraction signups

Requested via Slack.

uber/site_sections/attractions_admin.py

@@ -314,6 +314,14 @@ def event(
             'event': event,
             'message': message
         }
+
+    @csv_file
+    def signups_export(self, out, session, id):
+        event = session.attraction_event(id)
+        out.writerow(['Attendee', 'Badge #', 'Cellphone', 'Email', 'Signup Time', 'Checked In'])
+        for signup in event.signups:
+            out.writerow([signup.attendee.full_name, signup.attendee.badge_num, signup.attendee.cellphone,
+                          signup.attendee.email, signup.signup_time_local, signup.checkin_time_local or 'N/A'])
 
     @csrf_protected
     @not_site_mappable

uber/templates/attractions_admin/event.html

@@ -212,7 +212,10 @@ <h2 class="event-title">
 </form>
 
 {%- if event.signups -%}
-  <h2 class="attendees-title">Attendees Signed Up</h2>
+  <div class="d-flex align-items-center gap-3 mt-3">
+    <h2>Attendees Signed Up</h2>
+    <a href="signups_export?id={{ event.id }}"><i class="fa fa-download"></i> Download CSV</a>
+  </div>
   <table id="attendees-table" class="table table-hover table-responsive datatable"
       data-paging="false"
       data-info="false">