Add social media sharing buttons (AddThis)

git-svn-id: https://plugins.svn.wordpress.org/feedzilla-news/trunk@840061 b8457f37-d9ea-0310-8a92-e5e31aec5664
Add social media sharing buttons (AddThis)

git-svn-id: https://plugins.svn.wordpress.org/feedzilla-news/trunk@840062 b8457f37-d9ea-0310-8a92-e5e31aec5664