* Add 'account person set' command
This command allows a user to modify, say, their legal name in a
self-service fashion.
This wasn't possible before by default since the 'extend' operation
required additional ACPs in order to operate which not every user would
have.
The new "person set" api is compatible with the default self_write ACP,
and so allows self-service modification.
* Add a short section on people attributes to the book
