Hello folks!
Here are my Czech (*_cs.properties) localization files for Magnolia CE. There is also new calendar-cs.js file with encoding-neutral strings (so it works out of the box in mangolia).

The *_cs.properties files has been derived from *_en.properties of HEAD 2007/04/03 version, but extensive testing had been done under Magnolia 3.0.2, because I ad troubles getting dms module to work on HEAD.

Note: to make Czech language available to users - it is necessary to add new node into
Config -> server -> i18n -> availableLanguages (both Name and Value set to 'cs').