Where is the code for unified login/registration located?

Issue Summary

I need to take a look at your unified login code and so far I can only identify the .js as having anything to do with this. Over in the autoassignrole module there has been some work on declaring paths for assigning roles and i really think it's a good idea to look at your functionality in order to consider making that module function alongside this module.

A thought is presenting another form with autoassign that we could maybe hook into your unified login so that it looks like "I have an account," "I want to register as a Silver Member," and "I want to register as a Gold Member." Or something like that.

Can you point me to your code that I can look at and figure out where I need to hook into it etc? Thanks.