Implement functionality to make it easy to localize service for any languages

[MihanEntalpo]

1. Finish work on moving all content pages into Markdown, in a separate locale folders
2. Write (or use already existing) some kind of simple wrapper for javascript and php getText functionality
3. Walk through all the UI code and wrap all messages in a wrapper (2)
4. Build *.po and *.mo files for default locales (en_us, ru_ru)
5. Add tooling for easy creating of new translations