Update ru lang
Update ru lang

Added some strings of translation. 
Fixed many grammatical errors. The concept of "content" has been replaced by a more organic and simple word for a Russian person.
Also I deleted non existed site by first translator, and add info about me.
dignajar/bludit,clickwork-git/bludit,bludit/bludit,bludit/bludit,dignajar/bludit,clickwork-git/bludit