* Add missing `id` attribute to editor's textarea

Without this, it is impossible to add custom config to a single CKEditor
 instance since `CKEDITOR.replace()` uses the `id` of the field, not the
 name.
Signed-off-by: Micheal Mand <micheal@kmdwebdesigns.com>

* Fix `id` attribute for i18n editor
Signed-off-by: Micheal Mand <micheal@kmdwebdesigns.com>