entity editor: add more custom properties to edit

[jum-s]

regular users of the editor may feel a bit strange not seeing all the props they were used to before #311.

To solve that, a button at the bottom of the editor "Show more properties" could display the "display settings" checkboxes directly (a la "add missing edition" in the workLayout), which means to reuse DisplayedLinks in the editor. This would avoid having to wander deep into the settings to activate the props. Two advantages of displaying the component directly in the editor compared to navigating to the display settings: 1/ stay in the context of the editor, 2/ still be able to reactively display the property to be edited when checking a box