Update gems, use d3 gem, initial bootstrap v3 port

app/views/conference_registration/_registration.html.haml

@@ -1,15 +1,15 @@
 .row
-  .span12
+  .col-md-12
     %h3
       Registration for
       = @conference.title
 - if @person.proposal_count(@conference) > 0
   .row
-    .span12
+    .col-md-12
       %i
         Please note: Registration is not automatically performed for speakers.  If you're scheduled to speak at the conference, you still need to register!
 .row
-  .span12
+  .col-md-12
     = f.inputs :name => "Your Details" do
       %br
       Your public name (required)
@@ -75,4 +75,4 @@
         onSelect: function(selected) {
             $("#registration-arrival-datepicker").datepicker("option","maxDate", selected)
         }
-    });
+    });

app/views/conference_registration/_volunteer.html.haml

@@ -1,5 +1,5 @@
 .row
-  .span12
+  .col-md-12
     = f.input :volunteer, :label => "Click here if you want to become a volunteer at #{@conference.short_title}", :input_html => {:maxlength => 15, :size => 40}
     = f.fields_for :person do |p|
       = render :partial => 'devise/registrations/volunteerperson', :locals => {:p => p}

app/views/conference_registration/register.html.haml

@@ -1,5 +1,5 @@
 .row
-  .span12
+  .col-md-12
     = semantic_form_for(@registration, :url => register_conference_path(@conference.short_title), :html => { :method => :put }) do |f|
       .tabbable
         %ul.nav.nav-tabs
@@ -19,4 +19,4 @@
         = link_to "Unregister", register_conference_path(@conference.short_title),:method => :delete, :class => "btn btn-danger",
                     :confirm => "Are you sure you want to unregister?"
       - else
-        = f.action :submit, :button_html => { :value => "Register", :class => "btn btn-primary" }
+        = f.action :submit, :button_html => { :value => "Register", :class => "btn btn-primary" }