Create separate test apps for backend and manual frontend testing

[ramedina86]

We now have 3 different kinds of tests:

1. Backend automated
2. Frontend manual
3. Frontend automated

1 and 2 are sharing the same app, which makes both experiences worse. We should have separate ones.

Not too hard, but involves carefully removing components with instance paths that aren't being used by the backend tests.

[ramedina86]

I'll create a new app for frontend manual testing, please focus on removing unused elements from the backend one and renaming it.

Also, can you coordinate with @raaymax to reorganise the folder structure?

I'd prefer to have a single folder in the root tests and then subfolders

• e2e
• backend