Page Icon Upload
Upload a page icon and save it at the expected location/name.
Currently configured fallback mode: No fallback
Naming: if you choose the page name via ~pagename~, the icon applies only to that page. If you choose a generic namespace name such as icon or icon_thumbnail, the icon can be reused for the namespace and its child pages when parent fallback is enabled.
Allowed extensions: svg, png, jpg, jpeg
