This is my n-th attempt to create a meaningful menu. For testing purposes I
am trying to create a menu with a few URLs, e.g. http://www.google.com,
http://www.twitter.com. I am either trying to click Add menu item and
select Embed URL, or create a new page of category Website and add it to
the menu. In any case the URL is being lost and when the item is being
shown in the menu, clicking it actually refreshes the current page instead
of redirecting to the specified URL. When I am trying to edit the specified
Page the URL is nowhere to be found. I have the blog skeleton installed in
which the menu works but it just shows a menu with three Text pages, all of
which are internal Zotonic resources.

So, how can I add a menu item that will be an URL so that when the menu
shows on the site I can click that URL and be redirected to it? And also,
if I would like to construct a menu item that opens a controller within the
site, say site/admin for the sake of an example, how would I need to create
that menu item so that clicking it on the main site would actually redirect
me to the admin section? A short example based on the blog skeleton would
be greatly appreciated.