Add KYC verification to EQD signup form

[steelshark]

Goal of the project is to add KYC information to the signup form of the equid site.

Conditions of satisfaction
1. KYC fields are added to the equid signup form
2. Old accounts without KYC info are removed from the forum.

Estimated time
14 hours payable in EQD

[steelshark]

I added the requested fields to the forum as specified.
There was some fiddling in the code to get the countries list loaded but everything is implemented as custom fields from the SMF forum itself so it also shows up on people's profiles etc.
Time spent was +- 20 hours.