Saas mail verification page

[selankon]

Depends on https://github.com/vocdoni/saas-backend/pull/9/ and needs https://github.com/vocdoni/ui-scaffold/pull/765

It implements the email verification page.

• On signup page, once signup is success it shows an "verification email sent" message with a "resend email button"
• On login page if the error of the backend is that the email is not verified, it shows the "verification email sent" message with a "resend email button"
• Implements the route /account/verify?email=${email}&code=xxxxxxx
• Performs an automatic verification attempt using a useEffect
• If success redirect to /organization
• Else show an error
• Resend verification mail mutation is implemented but won't work until implemented on the backend

In addition, it implements specific considerations for dev environments:

• On signin page it shows a button to redirect to verify page without having verification code (because is not needed)
• It permits empty verification codes on verify page (on dev envs they are not neeeded)

An it fixes API function to:

• throw plain text errors

[github-actions[bot]]

🚀 Deployed on https://66ed2c03ca1d5112d96eaceb--vocdoni-app-stg.netlify.app

[github-actions[bot]]

🚀 Deployed on https://66ed2c05322d5d09aa1314e6--vocdoni-app-dev.netlify.app