Editors should be able to edit content of a content type that contains landing page field type in eZ Studio app. Right now, only the predefined landing_page content type allows editors to use eZ Studio app as the editing tool.

Questions/tasks:
1. How the app should behave when there are many different fields in the content, eq: embed field, date field, etc?
2. What workflow should be implemented in such situations?
3. The UI/wireframes should be updated to cover a new workflow.
4. It should be implemented on both backend and frontend side.