Russian translation of countries list

Added Russian translation of countries list, alphabetically ordered.  

Also, several ISO-3166 codes are just currently transitionally reserved (e.g. `AN` — Netherlands Antilles). Some are just reserved and not used, like `FX` — France, Metropolitan. Maybe it would be best not to include them?  

There are also quite a few countries missing from the original list: `AX` — Åland Islands, `SS` — South Sudan, etc. Shall I add them?