Propose path of new page from current active path. Also propose name of page from written path.

Example: You are currently browsing "/home/newpath/somepage" and want to add another page. The input field is pre-filled with "/home/newpath/". I add "newpage" to the path and is presented with the config-dialog for the page. The title-field is pre-filled with the "newpage" that I entered in path.