[PrivacyBadger] Privacy Badger version 2017.4.19.1

[Alexei]

Hi all,

Privacy Badger 2017.4.19.1 has been released for all browsers. You can
get it from https://www.eff.org/privacybadger.

This is primarily a bug fix release that should address certain CPU
issues, particularly in Firefox.

For further details, consult our release notes on GitHub:
https://github.com/EFForg/privacybadger/releases/tag/release-2017.4.19.1