T-PAC: Point the Basic Catalog link to the T-PAC

T-PAC: Point the Basic Catalog link to the T-PAC

Now that the T-PAC provides the base functionality (and more!) required
by the HTML-only basic catalog, but in a more extensible / skinnable
fashion, replace the link from the JSPAC to the Basic Catalog with a
link to the T-PAC - and add a reciprocal link from the T-PAC back to the
JSPAC, in case anybody wants to go that route.

Signed-off-by: Dan Scott <dscott@laurentian.ca>