issue685275 - show retired/unretired items in roundup-admin add pragma display_header to print headers for display command. Header displays designator and retired/active status. Add doc of pragma to affected commands. Add test for code paths.

#!/usr/bin/env python
from __future__ import print_function
import zlib, base64, sys
print(base64.encodestring(zlib.compress(sys.stdin.read())))