Bug 29487: Set autocomplete off for userid/password fields at login

Bug 29487: Set autocomplete off for userid/password fields at login

This patch adjust:
Intranet login
Opac-main
Opac-main - 'log in to your account modal'

To test:
Login at the three places above
Confirm html shows autocomplete off on the fields
Confirm logins work

Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Marcel de Rooy <m.de.rooy@rijksmuseum.nl>
Signed-off-by: Fridolin Somers <fridolin.somers@biblibre.com>
Signed-off-by: Kyle M Hall <kyle@bywatersolutions.com>
(cherry picked from commit 208225f34c2ef26b709070fb5365d81a4389f346)

Signed-off-by: Andrew Fuerste-Henry <andrew@bywatersolutions.com>