Have the subscription confirmed with email

[vincentcourtois]

Needs

As an anonymous user
I want to be able to confirm a subscription request to the service by a link sent by mail
So that I can validate my email and create my account

Architectural overview

• Accounts MUST NOT be created as valid with the POST /accounts route
• The POST /accounts route MUST create the account with a validation status and an attach validation request with a token
• The token of the validation request will be used on a POST /validations/:token to validate the account
• Until he's validated, an account CANNOT be used to login on the application
• When logging in on a non-validated account, the user will be prompted why he can't, and have the choice to send another validation request
• A new validation request will make the previous requests invalid

[vincentcourtois]

API Tasks

• [ ] https://github.com/modular-synthesizer/api/issues/24
• [ ] https://github.com/modular-synthesizer/api/issues/25
• [ ] https://github.com/modular-synthesizer/api/issues/26
• [ ] https://github.com/modular-synthesizer/api/issues/27

Frontend tasks

• [ ] https://github.com/modular-synthesizer/frontend/issues/26
• [ ] https://github.com/modular-synthesizer/frontend/issues/27
• [ ] https://github.com/modular-synthesizer/frontend/issues/28