[1.x] Redirect to intended path after login

[martijnb92]

Had some users complaining that email verification was not working properly in some cases.
For example on ios, when a user clicks the verification link, link is opened in a new window without any sessions.
The auth middleware will now prevent the email verification process since the user is not logged in.

This minor fix ensures a redirect to the intended page after login. In this example, back to verification link after login, which works fine now.

Without this fix users would be redirected to the /verify-mail page after login (depending on the verified middleware), with the option to resend the verification mail. This process will then be repeated over and over.

This should also fix the situation registration on device A, validation on device B (which has no active session)