Update Russian Translation

[wbnns]

Add the most recent Russian translations.

[saivann]

@gwb3 On index.list1, the new text overflows on the index page (see the live preview). We can either keep the previous translation here ("Мгновенные P2P
транзакции") or ask the translator if he wants to suggest something else that will be short enough to fit in the limited space.

[wbnns]

@saivann Ok, I see - let's keep the old one that uses 'P2P'. I don't think it will be possible to keep it from overflowing if we don't abbreviate.

[saivann]

@gwb3 Sounds good, can you update your branch and translation on Transifex?

[wbnns]

@saivann done and done. :)

[saivann]

LGTM, thanks!