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.
Merge pull request #53 from moigagoo/patch-1

Russian Localization: Various Improvements