Login errors should display on first failure.

lms/templates/login_modal.html

@@ -59,15 +59,16 @@
      postJSON('/login',
        submit_data,
        function(json) {
-       if(json.success) {
-        location.href="${reverse('dashboard')}";
-        } else if($('#login_error').length == 0) {
-        $('#login_form').prepend('<div id="login_error">Email or password is incorrect.</div>');
-        } else {
-        $('#login_error').stop().css("display", "block");
-        }
-        }
-        );
-     });
+         if(json.success) {
+           location.href="${reverse('dashboard')}";
+         } else {
+           if($('#login_error').length == 0) {
+             $('#login_form').prepend('<div id="login_error">Email or password is incorrect.</div>');
+           }
+           $('#login_error').stop().css("display", "block");
+         }
+       }
+     );
+   });
 })(this)
 </script>