* Improving Czech translation, up to line 374 now * Czech translation, revisited up to line 468 * Translation revision up to line 510. * Czech translation - small fixes here and there. * Czech translation - small fixes here and there. * Czech lang. - Fixed some typos found by @dusekdan * Czech - revision up to line 564 * Czech tr. - small fixes to fit into GUI * Czech tr. - small fixes after checking GUI