shows CRUD errors for tickets, frontend error handling and made URL's clickable

[willi-li-am]

I don't know if you guys wanted me to do it in the backend, but all I did was a parser that checks what kind of error it is and respond with a message related to the error

resolves #84

[willi-li-am]

Custom Messages:

• click "create new ticket" without selecting a ticket type
• these are errors made when throwing a new error in frontend

MongoDB validation errors:

• I fixed this on frontend side by adding "type = 'number'" to cost input
• If you remove the type = 'number' and input a string for cost, then it will give an invalid form error

Permission errors:

• permission to delete/update a ticket
• make isAdmin, is..., and isReporter false on backend, then try deleting/updating a ticket

MongoDB errors:

• Just says Internal Error, please try again
• Don't know how to create mongodb errors

[willi-li-am]

QOL Changes:

• made the page scroll to top every time user clicks on a new ticket (used useRef and useEffect which gets updated when location gets updated in Dashboard)
• removed autofocus from comments when clicking on new ticket
• highlight hovered and selected ticket on list

[ansonjwhe]

lgtm! nice QOL changes!

• tested all configurations of toast errors except MongoDB error
• tested current/hovered ticket list highlighting
• tested scroll to top on current ticket change (unaffected by filter query params)
• tested content tables with URL are clickable