Translate our webpage to Russian

completed by: Max Vorob'jov

mentors: Alexey Gudchenko

Please see http://code.google.com/p/sympy/issues/detail?id=2797 for full information on this task.

Please read https://github.com/sympy/sympy/wiki/gci-2011-landing before completing any tasks for SymPy.

Additional Note(s): We only have one person available per language, so review may take a few days. Please contact us before starting a translation task, to make sure that someone is available to verify the translation. See https://github.com/sympy/sympy/wiki/gci-2011-mentors to see who can verify this language.