Added missing JS files.

git-svn-id: https://plugins.svn.wordpress.org/addthis/trunk@802415 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fixed customised widget missing above the content.

git-svn-id: https://plugins.svn.wordpress.org/addthis/trunk@802432 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fixed customized code being missed after saving.

git-svn-id: https://plugins.svn.wordpress.org/addthis/trunk@802457 b8457f37-d9ea-0310-8a92-e5e31aec5664
Removed pinterest counter support.

git-svn-id: https://plugins.svn.wordpress.org/addthis/trunk@802468 b8457f37-d9ea-0310-8a92-e5e31aec5664
Releasing 3.5.4

git-svn-id: https://plugins.svn.wordpress.org/addthis/trunk@802488 b8457f37-d9ea-0310-8a92-e5e31aec5664