twitter gem and a partial added to embed tweets about a conference and new layout added for conference info screen

app/views/admin/conference/_sponsors.html.haml

@@ -0,0 +1,11 @@
+.container
+  .row
+    .col-md-12.text-center
+      %h2 Sponsors
+      - @conference.sponsorship_levels.each do |sponsorship_level|
+        -if sponsorship_level.sponsors.any?
+          - sponsorship_level.sponsors.each_slice(3) do |slice|
+            .row.row-centered
+              - slice.each do |sponsor|
+                .col-md-4.col-sm-4.col-centered.col-top
+                  = image_tag get_logo(sponsor), class: "img-responsive img-sponsor img-sponsor-#{sponsorship_level.position}"