R1:da0da83431a9

Fix display of admin "new value" in `accountadmin` script

Summary: I broke this when converting to PhabricatorUserEditor.

Test Plan:
Ran `accountadmin`, created an admin account, verified the "new value" column showed "Y".

ACCOUNT SUMMARY

OLD VALUE NEW VALUE
Username derp
Real Name derprp
Email derp@derp.com
Password…