Add support for states

[berestovskyy]

At the moment Validator localization is per-country, which is not enough for USA, for example. So, there should be a possibility to localize checks per-state as well:

• enable/disable checks per-state
• override check params per-state
• override wiki/forum links per-state

[berestovskyy]

@justins83 would you like to try to look into that? I will help. That is a long asked feature from the US country managers...