LP 1092284 - Fix add to my list dropdown with ContentCafe links

As noted in the bug ticket, the dropdown menu for Add to my list disappears
whenever hovering over the Reviews & More link for ContentCafe-enabled TPACs.

Removing position:relative from .results_review seems to keep the two areas
from having any strange interactions.

Signed-off-by: Ben Shum <bshum@biblio.org>
Signed-off-by: Kathy Lussier <klussier@masslnc.org>