- must not be historic
- must not be unavailable
- institute must allow requests

Maksym Tishchenko authored Nov 19, 2020 and Matija Obreza committed Nov 20, 2020

- support for two browser windows
- updated list and details pages to listen to updates of local storage.
- updated availability check function.
- buttons now work on details page
- fixed adding to local storage cart bug
- fixed checkboxes
- cart buttons on details/list pages.
- changed addToCart and removeFromCart to receive string.