Feat/404 page

[8bitzz]

Change-log

• Display toaster for error messages
• Fix bug Navigation Bar overlays content of other pages
• Add condition to render Navigation Bar on Layout
• Male limit room in Search page 1000
• Custom 404 page

How-to-test

Check out this branch and install + start server for both frontend backend

• [ ] Verify that toaster displayed when there are errors (Eg: token expired, clearing local storage then send requests to server,...)
• [ ] Try searching with keyword How to & verify that the result is > 6 rooms
• [ ] Type random url on address bar to see 404 page
• [ ] Join a Twilio chatroom and verify that Navigation Bar is excluded from this page
• [ ] Go to other pages such as Room Detail My Rooms page and verify that navigation bar does not overlay the content

Close #96 #100 #102