Re-enabled Czech translations

Contributes to CURA-8153

resources/qml/Preferences/GeneralPage.qml

@@ -156,7 +156,7 @@ UM.PreferencesPage
                     Component.onCompleted:
                     {
                         append({ text: "English", code: "en_US" })
-                        //Czech is disabled for being incomplete: append({ text: "Čeština", code: "cs_CZ" })
+                        append({ text: "Čeština", code: "cs_CZ" })
                         append({ text: "Deutsch", code: "de_DE" })
                         append({ text: "Español", code: "es_ES" })
                         //Finnish is disabled for being incomplete: append({ text: "Suomi", code: "fi_FI" })