Break up the one-query-of-doom

The single query was producing a tremendously large ActiveRecord allocation.

While this isn't nearly as cool as one query, it's still a significant
reduction in SQL trips, and now has the bonus of only loading what is
actually going to be displayed.

app/views/conferences/show.html.haml

@@ -12,35 +12,43 @@
 
 #splash
   -# header/description
-  = render 'header', conference: @conference
+  = render 'header', conference: @conference, venue: @conference.venue
 
   -# calls for content, or program
   - if @conference.splashpage.include_cfp
-    = render 'call_for_content', conference: @conference
+    = render 'call_for_content', conference: @conference,
+      call_for_events: @call_for_events, call_for_tracks: @call_for_tracks,
+      event_types: @event_types, tracks: @track_names
+
   - if @conference.splashpage.include_program
-    = render 'program', conference: @conference
+    = render 'program', conference: @conference, tracks: @tracks,
+      highlights: @highlights, booths: @booths
 
   -# attendance/registration
   - if @conference.splashpage.include_registrations
     - if @conference.registration_open?
-      = render 'registration', conference: @conference
+      = render 'registration', conference: @conference,
+        registration_period: @conference.registration_period,
+        tickets: @tickets, conference_id: @conference_id.short_title
   - if @conference.splashpage.include_tickets && @conference.tickets.any?
-    = render 'tickets', conference: @conference
+    = render 'tickets', conference: @conference, tickets: @tickets
 
   -# geo
   - if @conference.splashpage.include_venue && @conference.venue
-    = render 'venue', conference: @conference
+    = render 'venue', conference: @conference, venue: @conference.venue,
+      commercial: @conference.venue.commercial
   - if @conference.splashpage.include_lodgings && @conference.lodgings.any?
-    = render 'lodging', conference: @conference
+    = render 'lodging', venue: @conference.venue, lodgings: @lodgings
 
   -# sponsorship
   - if @conference.splashpage.include_sponsors
-    = render 'sponsors', conference: @conference
+    = render 'sponsors', conference: @conference,
+      sponsorship_levels: @sponsorship_levels
 
   -# footer
   - if @conference.splashpage.include_social_media
     - if @conference.contact.has_social_media?
-      = render 'social_media', conference: @conference
+      = render 'social_media', contact: @conference.contact
   = render 'footer'
 
   = yield :modals