new experimental md files editor based on CodeMirror
Resolves #14260 (closed). It is new experimental md files editor based on CodeMirror with menu bar,instead of Ace Editor that is currently used.
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
Resolves #14260 (closed). It is new experimental md files editor based on CodeMirror with menu bar,instead of Ace Editor that is currently used.