project manager may create persons but cannot allow them to login / #1222

Added new permission, RIGHT_PERSON_GRANT_ACCT which allows you
to set the "can login?" bit on a user. By default, if you have
the ability to create a user you also have the ability to edit
a user so I made it the default that if you can create/edit a user,
you can also grant them an account (ie. login). This allows admins to
allow people to "really" setup new accounts without giving them the
permissions to edit people's rights (which you required before). This means that project managers will now have a new permission by default. As this might not be desired, we should make sure to note this in our release notes for V0.0803.