Preventing accidental deletion of a page
The buttons for creating and deleting a page are very close to each other. This makes it very easy to accidentally delete a page. As far as I know, it is currently not possible to restore a deleted page?
I think it would be a good idea to open an additional confirmation dialog when the delete button is pressed, which warns the user that the page will be irreversibly deleted.
Another option would be to move the deleted page to a trash bin first. From here, the user could then restore the page or delete it permanently.