Error "Missing or insufficient permissions." when capital letters are in the email address

[Sofus Albertsen]

Steps to reproduce:
Try to sign up with [e-mail]
When clicking sign up, your get the error message:
"Missing or insufficient permissions."

Changing it to lowercase solves the problem

[Luca Micieli]

@sofusalbertsen firebase internally creates the user token with the lowercase email. While creating a user record in the database we check that the email is the same as the one in the token. #276 forces the email to be lowercase and solves the problem

[Sofus Albertsen]

Wow that was fast!
Thanks @rams23 !