wsl 2.2.3-rc.2

git-svn-id: http://plugins.svn.wordpress.org/wordpress-social-login@1011553 b8457f37-d9ea-0310-8a92-e5e31aec5664
insert WSL 2.2.3 Pre-Release Notes.

git-svn-id: http://plugins.svn.wordpress.org/wordpress-social-login@1011556 b8457f37-d9ea-0310-8a92-e5e31aec5664