Fix microcopy for CSRF validation failure. Remove display of bad token, I mean what is the user going to do with it. Details are logged so no info is lost. Make verbage more user friendly. Suggest re-entering unsaved data and trying again.

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