Add configuration to disable user registration

[irby]

Description

Work to address #911, add configuration to disable user signup functionality. By default, users will be able to signup. If account.allow_signup is set to false within the configuration, it will not allow users to register from the frontend or by calling the user create API.

Implementation

Added a new bool value to the configuration in the backend called AllowSignup that will be true by default.

On the backend, I added a check in the user create endpoint to check whether this config value is set to false. If so, it will return a 403 Forbidden response.

On the frontend, added a new page for when an account does not exist. This page does not include a button to register, it will only allow users to navigate back to the login screen. Users will only be redirected to this new screen if the config disallows user signups.

Tests

Added a test in the backend to verify that account creation is forbidden if account.allow_signup is disabled in the configuration. On the frontend side, I ran the application locally to verify new site behavior of signup is disabled. I could create an e2e test to test site navigation in an automated fashion, please let me know if I have authorization to update the GitHub action.

Todos

N/A

Additional context

N/A

Screenshots

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[like-a-bause]

Hey Matt. Thanks a lot!
What do you mean by "let me know if I have authorization to update the GitHub action." What do you want to change? In general: Go for it, I think we have to approve such changes before anything gets executed.

[irby]

@like-a-bause Added in an e2e test for the nosignup flow. Ready for re-review!

[lfleischmann]

Hi @irby,

thanks! LGTM, will merge now.

[FlxMgdnz]

Thanks @irby - awesome work.

[FlxMgdnz]

/tip $150 @irby

[algora-pbc]

@irby: You just got a $150 tip! 👉 Complete your Algora onboarding to collect your payment.

[irby]

Hi @FlxMgdnz , thank you very much for the tip! Greatly appreciated. I've created an Algora account. How do I collect the tip?

[FlxMgdnz]

Hey - you're welcome. You would have to create an account at Algora, which I can only recommend.

[algora-pbc]

🎉🎈 @irby has been awarded $150! 🎈🎊