update form with new context name

app/assets/javascripts/tracks.js.erb

@@ -659,7 +659,7 @@ var ContextListPage = {
         $.post(relative_to_root('contexts/'+context_id), {
             'context[name]': value,
             '_method': 'put'
-        }, highlight);
+        }, highlight, 'script');
         return value;
     },
     setup_behavior: function() {

app/views/contexts/update.js.erb

@@ -18,6 +18,7 @@ var <%=object_name%> = {
       <% else -%>
         <%=object_name%>.replace_context_form_with_updated_context();
       <% end -%>
+      TracksForm.set_context_name("<%= escape_javascript(@context.name)%>");
     },
     remove_and_re_add_context: function() {
       $('#<%=dom_id(@context, 'container')%>').slideUp(500, function() {