Split View mode into View mode and Preview mode
The features on the top toolbar of the editor need to be hidden in the proper view mode on TeSS, but are useful to the editor. Maybe instead of just Edit and View - we could have an additional mode called 'Preview' which keeps the toolbar for use by the editor, and a 'View' mode which completely hides them.
The nodes can still be moved on view mode so this needs to be disabled too.