Auto flag after user registers does not work for me.

Problem/Motivation

From the description page:

> Automatically "Flag" entity with clicked flag after successful Login or Registration

Auto flag after user registers does not work for me.

Steps to reproduce

1. Click a flag as anon
2. Register
3. Click confirm email link
4. See that flag is not set

Login/Register is set to popup. The auto-flag after login, does work for me.

Proposed resolution

Remaining tasks

User interface changes

API changes

Data model changes