Page should not be embedded in alias

[bep]

I'm doing some major Christmas code cleaning (and some cool updates), and the context passed to the Alias template is:

type aliasPage struct {
	Permalink string
	page.Page
}

Which does not make too much sense. The documentation is correct about this, so I have marked it as a bug.

The above means that you can do {{ .Title }} to get the aliased page's Title.

I will make it into a method, which will potentially (if they did not read the documentation) break some sites, but the above example would have to be {{ .Page.Title }}