Convert the Czech tutorial translation to use .po files
completed by: Vishal
mentors: Ondřej Čertík, Vladimir Perić
Please see http://code.google.com/p/sympy/issues/detail?id=2879 for full information on this task.
Please read https://github.com/sympy/sympy/wiki/gci-2011-landing before completing any tasks for SymPy.