[AndyB] Country registration check 1.9

Description:

Blocks registration to specified countries.

Features:

• Uses ipstack.com for accurate country locations.
• Uses internal table for recent IP locations.
• All phrases start with countryregistrationcheck_ for your convenience.

Setup:

1. Navigate to Sign Up - ipstack and sign up for their free plan.
2. Enter access key into options page.
3. Enter country codes into options page.

View countries registration check page:

You view a list of blocked countries, add 'countryregistrationcheck' to your forum URL. Must be an admin to view this page.

Database changes:

A table called andy_country_registration_check is created in your database.

Questions and Answers:

Q: I want to block a few countries.
A: Enter those country codes into the Blocked country codes field. Leave the Allowed country codes field empty.

Q: I want to allow only a few countries.
A: Enter those country codes into the Allowed country codes field. Leave the Blocked country codes field empty.

Q: How far back in time does the country registration page show?
A: The last 24 hours.