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/AddIconBtn.jsx

@@ -8,6 +8,7 @@ export default function AddIconBtn(props) {
       icon={<FiPlus />}
       colorScheme='blue'
       onClick={props.clickHandler}
+      _focus={{ boxShadow: 'none' }}
     />
   );
 }