Fewer queries for for Conference#show

Reduces SQL wait times by >90% on splash pages.

app/views/conferences/_lodging.html.haml

@@ -13,9 +13,9 @@
       %p.lead
         We recommend these affordable lodging accommodations for your visit.
 
-  .row.row-centered{ style:"display: flex; flex-wrap: wrap" }
+  .row.row-centered
     - @conference.lodgings.each do |lodging|
-      .col-md-4.col-sm-4.col-centered.col-top{ style:"display:flex;" }
+      .col-md-4.col-sm-4.col-centered.col-top
         .thumbnail
           - if lodging.picture?
             -if lodging.website_link.present?
@@ -30,8 +30,8 @@
                   %i.fa.fa-home.fa-5x
               - else
                 %i.fa.fa-home.fa-5x
-          .caption
-            %h3.text-center
-              = lodging.name
-            -if lodging.description.present?
-              = markdown(lodging.description)
+        .caption
+          %h3.text-center
+            = lodging.name
+          -if lodging.description.present?
+            = markdown(lodging.description)