Update login methods

[FMorschel]

I believe that there should be Screen/Dialogs for updating login methods.

Inside the ProfilePage I can link/unlink providers just fine, but there is no option for me to update the login email without:

• (if there is only one provider) Linking new provider;
• Unlinking email/password provider;
• Link the provider again with the new email.

I believe there should be options to update the email, password, phone, etc by simply saying that you would like to do that, not having to do a workaround like this.