Rework all runtime MS configuration into app.yaml

[zdw]

This removes admin_info.py, the functionality of which has been moved into msconfig.py and app.yamlin, and consolidates all runtime MS configuration in the generated app.yaml file.

The makefile for creating certificates and filling variables app.yaml is now named configure_ms.mk and replaces MS.mk which only handled certificates. It's designed so that it's parameters can be overridden by another Makefile that includes it.

[jcnelson]

Thanks!