TPAC: Avoid paginator HTML rather than hiding it

TPAC: Avoid paginator HTML rather than hiding it

Rather than generating HTML and then hiding it via CSS, just don't
generate the HTML at all. In this case, avoid generating the Previous /
Next links in those cases where we're on either page one or the last page
of results respectively.

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