Don't try to use Titlecase wrapper if not defined

Don't try to call the function passed from Lingua::EN::Titlecase
function if the tc variable is undefined.

This avoids having blank titles when the template is used in an
environment where EGWeb isn't passing the function to the templates.

Signed-off-by: Jeff Godin <jgodin@tadl.org>
Replace a bare URL in an 856 link label

If a bare URL has survived this far as an 856 link label, replace it
with something generic rather than displaying a difficult-to-wrap
URL.

Signed-off-by: Jeff Godin <jgodin@tadl.org>