Change default plugin filename usage to plugin.js for externals.

git-svn-id: https://plugins.svn.wordpress.org/wp-super-edit/trunk@927318 b8457f37-d9ea-0310-8a92-e5e31aec5664
Change default plugin filename usage to plugin.js for externals.

git-svn-id: https://plugins.svn.wordpress.org/wp-super-edit/trunk@927319 b8457f37-d9ea-0310-8a92-e5e31aec5664
Updates for TinyMCE plugins; layer, table


git-svn-id: https://plugins.svn.wordpress.org/wp-super-edit/trunk@927321 b8457f37-d9ea-0310-8a92-e5e31aec5664