Change Russian splitter from +7 495 000 0000 to +7 495 000 00 00

There is more correct number splitting `+7 495 000 00 00` instead of `+7 495 000 0000`. As referenced [here](http://www.artlebedev.ru/kovodstvo/sections/91/) (same article but [in english](http://www.artlebedev.com/mandership/91/)) and on [wiki](https://ru.wikipedia.org/wiki/%D0%A2%D0%B5%D0%BB%D0%B5%D1%84%D0%BE%D0%BD%D0%BD%D1%8B%D0%B9_%D0%BD%D0%BE%D0%BC%D0%B5%D1%80).

I didn't change it for South Osetia and `fixed(3)` because don't know much about these cases.