added tinymce editor

public/js/tinymce/notices.txt

@@ -0,0 +1,21 @@
+Below is a list of third party libraries that this software uses:
+----------------------------------------------------------------
+
+dompurify
+owner: Mario Heiderich
+repo: https://github.com/cure53/DOMPurify
+version: 3.2.6
+license: MPL-2.0 OR Apache-2.0
+
+prismjs
+owner: Lea Verou
+repo: https://github.com/PrismJS/prism
+version: 1.25.0
+license: MIT
+
+
+prism-themes
+owner: Lea Verou
+repo: https://github.com/PrismJS/prism-themes
+version: 1.9.0
+license: MIT