WordPress 4.0 support, including a much newer TinyMCE plugin, with many new features, including background color and horizontal alignment. Dramatically improved support for paragraphed content inside of a cell (paragraph breaks no longer disappear on save).

git-svn-id: https://plugins.svn.wordpress.org/mce-table-buttons/trunk@971853 b8457f37-d9ea-0310-8a92-e5e31aec5664