Allow users to browse before having to signup/login

[mnixo]

Description

Closes #276
Allows anonymous users (unauthenticated) to navigate the app and browse listed items.
When they try to access restricted pages (add item, conversations and profile), they are prompted to login.
The app landing page is now the home page.

Files changed

The landing page is updated to simply redirect to the home page.
Add item, conversations and profile pages are updated to redirect to the login page when the user is not logged in.
Item page is updated to hide the "MESSAGE" button when the user is not logged in.
A new Cypress E2E test file is added and additional page objects and fixtures are created/updated.

UI changes

276.mp4

Tests

Tests added to cover the following scenarios for anonymous user navigation:

• Is redirected from landing page to home page.
• Can browse items.
• Can see about page.
• Add item redirects to login.
• Message redirects to login.
• Profile redirects to login.

[netlify]

👷 Deploy request for cool-creponne-3e1272 pending review.

Visit the deploys page to approve it

Name	Link
🔨 Latest commit	5dcee5b

[camelPhonso]

Really great 👌 thanks !

Thanks for adding to the E2E tests for this as well.

I'm requesting a change as I think there's a really good chance here to correct some weird routes we've inherited but the code all looks awesome.

[camelPhonso]

I think it would probably make sense to use this opportunity to correct a bit of a weird design decision that was made at the start of the project.

Since people will be starting from the home-page route we should probably just make that the actual home and move it to here.

This would mean correcting a few redirects throughout the codebase but now is probably the perfect opportunity to do it.

So that would leave us without a /home-page route and its contents would live in / instead. All others stay the same.