Add missing [% in prefs_settings.tt2.

Signed-off-by: Jason Stephenson <jason@sigio.com>
Signed-off-by: Ben Shum <bshum@biblio.org>
Fix version number in 0793.data.best-hold-order-traditional-approx.sql

Signed-off-by: Jason Stephenson <jstephenson@mvlc.org>
Signed-off-by: Ben Shum <bshum@biblio.org>