SECURITY: Add data attribute to patrol links so it can't be spoofed by user

Javascript used to look just for the patrollinks class, which
could be set by the user in order to patrol an arbitrary page.

Bug: T103239
Change-Id: I13fcc3ce479c0a4a90a6217c2e5244f051eaf862

Signed-off-by: Chad Horohoe <[email protected]>