Add unit test for invalid password change by admin
Add unit test for invalid password change by admin

heartsucker/securedrop,garrettr/securedrop,conorsch/securedrop,conorsch/securedrop,ageis/securedrop,micahflee/securedrop,conorsch/securedrop,ageis/securedrop,conorsch/securedrop,micahflee/securedrop,ehartsuyker/securedrop,heartsucker/securedrop,ageis/securedrop,ehartsuyker/securedrop,micahflee/securedrop,micahflee/securedrop,garrettr/securedrop,garrettr/securedrop,ageis/securedrop,ehartsuyker/securedrop,heartsucker/securedrop,heartsucker/securedrop,ehartsuyker/securedrop,conorsch/securedrop,garrettr/securedrop,heartsucker/securedrop,ehartsuyker/securedrop,ehartsuyker/securedrop