Replace direct 'click' event binding with delegated binding. Fixes #58.

Direct binding only works for elements already in the DOM, delegated
binding works for all elements that match a filter even if created after
the DOM is fully loaded.

app/templates/domain_management.html

@@ -77,7 +77,7 @@
 $("#domain_multi_user").multiSelect();
 
 // handle deletion of user
-$('.delete_domain').click(function() {
+$(document.body).on('click', '.delete_domain', function() {
     var modal = $("#modal_delete_domain");
     var domain = $(this).prop('id');
     var info = "Are you sure you want to delete " + domain + "?";