Fixes multiple HTML validation errors.

Updates deprecated functions being used in the widgets.

git-svn-id: https://plugins.svn.wordpress.org/ik-facebook/trunk@857378 b8457f37-d9ea-0310-8a92-e5e31aec5664
Fixes a few more validation errors.  Updates tested up to tag to 3.8.1

git-svn-id: https://plugins.svn.wordpress.org/ik-facebook/trunk@857465 b8457f37-d9ea-0310-8a92-e5e31aec5664
few more validation tweaks

git-svn-id: https://plugins.svn.wordpress.org/ik-facebook/trunk@857896 b8457f37-d9ea-0310-8a92-e5e31aec5664