Add guest info page

• Expanded output from guest info api endpoint
• Share guest info between both routes under /sponsor of the frontend.
• More localised text options added for use on the sponsor pages
• Details button on the sponsor overview page now points to the guest info page for each person.

frontend/src/components/link/link.test.tsx

@@ -2,13 +2,12 @@ import React from 'react'
 import { render, waitFor, screen } from '@testing-library/react'
 import Link from './index'
 
-
 describe('Tests for Link component', () => {
   test('External link prefixes route link with //', async () => {
-    render(<Link external to='example.org' />)
+    render(<Link external to="example.org" />)
 
     await waitFor(() => screen.getByRole('link'))
 
     expect(screen.getByRole('link')).toHaveAttribute('href', '//example.org')
   })
-})
\ No newline at end of file
+})