[MERGE AFTER 2.0] Remove docs on customizing checkout page

[TChukwuleta]

Based on the BTCPay Server 2.0: Megathread , part of the task is to Remove docs on https://docs.btcpayserver.org/Development/Theme/#checkout-page-themes

This PR tends to resolve it, by removing the path from the side bar so that it is not accessible

[NicolasDorier]

Why not removing the article itself and the images as well?

Also note: To be merged when 2.0 is out.

[TChukwuleta]

I wasn't sure so sure, that's why I didn't remove it. I would do that.

Yea, I'm aware that it's after 2.0 merge. Thank you

[dennisreimann]

I dont think we should completely remove the page, but most of it. We should keep the "Developing and extending a custom theme" part and adapt it to what we've added with the branding options.

Can you re-add that page with the "Developing and extending a custom theme" only (until "2. Bootstrap themes") and I can adjust it from there? Thanks!

[TChukwuleta]

Sure @dennisreimann

[TChukwuleta]

Updated @dennisreimann

[dennisreimann]

Adapted it to fit with the current state.

[pavlenex]

To be merged when 2.0 is out.

[pavlenex]

@dennisreimann mentioned

The doc in the PR version is a refresher about customizing the server theme, imho it can get merged right away.

I agree with this, @NicolasDorier ?

[NicolasDorier]

Seems good to me