[i18n] Updated cs translation

[Michael Grafnetter]

They are for master + FRAMEWORK_5_2.

Dne 6.5.2015 17:17, Jan Schneider napsal(a):
>
> Zitat von Michael Grafnetter <grafnetter at dekanat.mff.cuni.cz>:
>
>> Hi,
>>
>> I have made some minor changes to the Czech translation. The updated
>> *.po files can be downloaded from here:
>>
>> http://1drv.ms/1EXkPSc
>
> Which versions/branches are these for?
>