Fixed and updated Russian translations.

Current Russian translations make all my friends(and not only them, any Russian people) laugh. They were made using google translate, and most of them are not correct. Now fixed(I am from Russia).
P.S.
Updated it to latest en_US translations.
Russian translations update.

Whoops, I missed one <entry>, and forgot about header <comment>.
Merge pull request #257 from kol999/master

Updated and fixed Russian translations.