Bug 26102: Prevent XSS when To.json is used: admin/preferences.tt

Bug 26102: Prevent XSS when To.json is used: admin/preferences.tt

Test that preference search term highlighting works correctly.

Signed-off-by: Nick Clemens <nick@bywatersolutions.com>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 5df95693f93e1ef95f74eb4a118319e84ed7703e)
Signed-off-by: Victor Grousset/tuxayo <victor@tuxayo.net>
(cherry picked from commit b4b87a3091a38985d13f2a6d2eb243589ec8b7dd)

Signed-off-by: Wainui Witika-Park <wainuiwitikapark@catalyst.net.nz>