Security enhancements

*** Part of the security enhancements update ***

The security enhancements are a group of new features that can be further sorted into two categories of improvements:

Auditing improvements
    CORE-285 Log number of attempted logins
    CORE-286 Log admin functions

Password Management improvements
    CORE-287 Lockout after failed logins
    CORE-288 Enforce complex passwords
    CORE-289 Mandatory password change
    CORE-300 Prevent repeat password

Each of the above features is listed as a sub-task of this story.