bugs to fix:

[-] handle path not found error on the frontend for various routes where it's applicable

[x] fix bug on grouplist: it display each book twice (why?)

[x] fix bug on addBook form, clicking the cancel button still adds the book to the database with empty strings for all fieldname

[x] fix bug on addBook form, need to hook up the selected option with the statuses table in the backend

[x] add a cleanup function in two useEffectHooks, one used in BookDescription, another in BookImage

[-] add a button or a link that allows user to see all books after choosing to see books through one of the sorting mechanisms, currently there is no way for a user to see all books without refreshing page

Stretch goals:

[-] make taglist and grouplist collapsible using drop down menu

[-] make number of books in each tag/group/read-status appears next to tagname/groupname/statusname

[-] implement search functionality

[-] add some cool fadein animation

[-] make displays responsive to screen size using media query

[-] add choose light theme and dark theme functionality

[-] refactor css to sort styling by groups of related components