a bunch of code improvements

git-svn-id: http://plugins.svn.wordpress.org/wordpress-social-login@1004601 b8457f37-d9ea-0310-8a92-e5e31aec5664
todos

git-svn-id: http://plugins.svn.wordpress.org/wordpress-social-login@1004610 b8457f37-d9ea-0310-8a92-e5e31aec5664
tag it 2.2.3-dev version

git-svn-id: http://plugins.svn.wordpress.org/wordpress-social-login@1004616 b8457f37-d9ea-0310-8a92-e5e31aec5664
damn it... mistakes. back to 2.2.2 stable

git-svn-id: http://plugins.svn.wordpress.org/wordpress-social-login@1004668 b8457f37-d9ea-0310-8a92-e5e31aec5664