Updated translation for Russian language

Hello!
I've updated translation for Russian language: ru.po and glossary file.

As the last contributor of russian file is not active and no active disscussion of russian translation update in dev list, I consider that you can use my work to update ru.po. Currently it's rather outdated but I tried to translate most entries except some busines features + aq banking part (as it's not really usefull in russia, as it's not supported by Russian banks)

Thank you!