Feature request: List all users and their associated phone numbers

[SilkeMeyer]

It would be handy to see which user has got which phone number. As discussed on the ML, you can query the database with
select a.number,b.caller_name from phone_numbers a join sip_accounts b
ON a.phone_numberable_id = b.id where a.phone_numberable_type = "SipAccount";
Could you implement this in the web interface?