Integrate Shariff to protect privacy of users

[lordyavin]

With Shariff, website operators protect the privacy of their visitors from the excessive curiosity of social networks such as Facebook, Google+ and Twitter. For visitors, one click is enough to share a page with friends.

https://www.heise.de/ct/artikel/Shariff-Social-Media-Buttons-mit-Datenschutz-2467514.html