Add small utility script for dumping dbm based databases. Use it to dump dbm based files like db/sessions (records session keys) or db/otks (records one time key for password recovery, data for rate limiting logins and rest interface and other short duration data).

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