Russian Localization: Various Improvements

Improved: 
- several translations, capitalization (in Russian, only the first word in title is capitalized)
- date format (month-day-year changed to day-month-year, which is more natural for Russian)
- Javascript -> JavaScript (in the English original as well)
- Grammar

It'd be cool if you could include these changes in 1.4 :-)

P.S. I've modified the PO file only; I guess you have to rebuild the MO now. Sorry for not doing so, I'm currently out of reach of proper tools, I've even made this mod via GitHub in browser.