fixes: muly

- strange behaviour with overflow (clip not valid)
- wrong message in quit button
- add icon to splash screen
- tray.remove() > tray.destroy()

client/src/App.css

@@ -7,6 +7,7 @@ body,
 html,
 .App {
   margin: 0px auto;
+  overflow: hidden;
   overflow: clip;
   height: 100vh;
 }

client/src/features/menu/buttons/QuitIconBtn.jsx

@@ -57,7 +57,7 @@ export default function QuitIconBtn(props) {
                 Cancel
               </Button>
               <Button colorScheme='red' onClick={handleShutdown} ml={3}>
-                Delete
+                Shutdown
               </Button>
             </AlertDialogFooter>
           </AlertDialogContent>