Update gems, use d3 gem, initial bootstrap v3 port

app/views/admin/events/_proposal.html.haml

@@ -1,15 +1,14 @@
-.row-fluid
-  .span10
+.row
+  .col-md-12
     %h3
       = @event.title
       %br
-      %span.muted
+      %small
         = @event.subtitle
-  .span2
-    = link_to "Edit", edit_admin_conference_event_path(@conference.short_title, @event), :class => "btn btn-mini  btn-primary"
+      = link_to "Edit", edit_admin_conference_event_path(@conference.short_title, @event), :class => "btn btn-mini btn-default pull-right"
 
-.row-fluid
-  .span12
+.row
+  .col-md-12
     %table.table
       %tr
         %td{:style => "width:15%"}
@@ -161,7 +160,7 @@
               = link_to "Delete", conference_proposal_event_attachment_path(@conference.short_title, @event.id, a.id),
                 :method => :delete, :confirm => "Are you sure you want to delete this attachment?  It's permanant!"
 
-.row-fluid
+.row
   = link_to "Comments (#{@comment_count})", "#", :id => "event-comment-link"
   #comments-div
     %hr