v.2.0.0 - fix tinyMCE 4.0 issues and preg_replace_callback for PHP < 5.3.0. Compatibility with WP 3.9

git-svn-id: https://plugins.svn.wordpress.org/pixgridder/trunk@897348 b8457f37-d9ea-0310-8a92-e5e31aec5664