refractor + style tweaks

- bugfix on lower
- delay between 0-60 minutes
- action buttons in dropdown
- added button for toggling element visibility
- several css and code cleanups
- renamed settingsAPI

client/src/common/components/buttons/VisibleIconBtn.jsx

@@ -9,6 +9,7 @@ export default function VisibleIconBtn(props) {
       colorScheme='blue'
       variant={props.active ? 'solid' : 'outline'}
       onClick={props.clickHandler}
+      _focus={{ boxShadow: 'none' }}
     />
   );
 }