Improve layout + logout

src/App.tsx

src/components/DateSelector/dateSelector.scss

src/components/Editing/Editing.tsx

src/components/Editing/editing.scss

src/components/Layout/layout.module.scss

src/components/Menu/Menu.tsx

src/components/Menu/menu.scss

src/components/Modal/modal.scss

src/components/Navbar/navbar.scss

src/hooks/useAuth.ts

src/styles/config/_layout.scss