Removes ember

git-svn-id: https://plugins.svn.wordpress.org/wp-spoiler-alert/trunk@955200 b8457f37-d9ea-0310-8a92-e5e31aec5664
Removes twig forms

git-svn-id: https://plugins.svn.wordpress.org/wp-spoiler-alert/trunk@955202 b8457f37-d9ea-0310-8a92-e5e31aec5664
Removes vendor

git-svn-id: https://plugins.svn.wordpress.org/wp-spoiler-alert/trunk@955204 b8457f37-d9ea-0310-8a92-e5e31aec5664