Bug 30762: Terminology: Go to Staff client

Bug 30762: Terminology: Go to Staff client

Test plan
Login to staff interface
Go to Administration. Search EnableExpiredPasswordReset. Enable this preference. Save.
Find your patron record and go to details.
In the ‘OPAC/Staff interface login’ section, set the Password expiration date to  the previous day. Save.
Open the OPAC in a new window.
Login to your account. It will fail. Click Reset your password.
Follow the process to add a new password.  Click update password.
See that it says ‘Go to staff interface’

Signed-off-by: Chris Cormack <chrisc@catalyst.net.nz>
Signed-off-by: Katrin Fischer <katrin.fischer@bsz-bw.de>
Signed-off-by: Tomas Cohen Arazi <tomascohen@theke.io>