[Anonymity] A few more tweaks to shuffle - Verifications come from all members not just shufflers, the debug message was wrong - On a blame verification message, ensuring that it is correctly made doesn't happen in the same state as checking whether or not a member sent different versions to different users, so message integrity was pushed into the message handling code.
[Anonymity] A few more tweaks to shuffle
- Verifications come from all members not just shufflers, the debug message was wrong
- On a blame verification message, ensuring that it is correctly made doesn't happen in the same state as checking whether or not a member sent different versions to different users, so message integrity was pushed into the message handling code.

lbarman/prifi,lbarman/prifi,lbarman/prifi