Fix up fetching jquery.visibility

At some point the fetch-dependencies stopped working as the
visibility URL changed. Fix this up and also fix up adding the
danger class to ajax error messages

Closes-Bug: #1325076
Change-Id: I35af2fa08044f479c8f1200ba543cca908173aa8
diff --git a/etc/status/public_html/jquery.zuul.js b/etc/status/public_html/jquery.zuul.js
index 9a3c1fa..01f8bd3 100644
--- a/etc/status/public_html/jquery.zuul.js
+++ b/etc/status/public_html/jquery.zuul.js
@@ -663,8 +663,10 @@
                         );
                     })
                     .fail(function (err, jqXHR, errMsg) {
-                        $msg.text(source + ': ' + errMsg).show();
-                        $msg.removeClass('zuul-msg-wrap-off');
+                        $msg.text(options.source + ': ' + errMsg)
+                            .addClass('alert-danger')
+                            .removeClass('zuul-msg-wrap-off')
+                            .show();
                     })
                     .complete(function () {
                         xhr = undefined;