Let all the anchors id on the print page to have a path id prefix to
help locate.
e.g. bar/foo.md#abc -> #bar-foo-abc
Also append a dummy div to the start of the original page to make sure
that original page links without an anchor can also be located.
Fix to remove all the `./` in the normalized path id so that for
"./foo/bar.html#abc" we still get "#foo-bar-abc"
Add support for redirect link anchors in print page so that anchors can
also be redirected, also handle URL redirect links on print page
Handle all the elements id to add a path prefix, also make path id to
all be the lower case
Fix for print page footnote links by adding the path id prefix
Signed-off-by: Hollow Man <hollowman@opensuse.org>
5b6b5e2605