api: record user action in CreateUser handler

Related to #397.
api: rename CreateUser to createUser

Related to #289.
api: record user action in the first step of resetPassword handler

Related to #397.
api: record user action in the second step of resetPassword handler

Related to #397.
api: record user action in the login handler

Related to #397.
api: record user action in the ChangePassword handler

Related to #397.
api: rename ChangePassword handler to changePassword

Related to #289.
api: record user action in the RemoveUser handler

The last user action ever :-)
api: rename RemoveUser handler to removeUser

Related to #289.
api: record user actions in the AddKeyToUser handler

Related to #397.
api: unexport AddKeyToUser handler

Related to #289.