* [oyX1]: emit error message for not found xcalib
* [core]: add internal oyShowMessage()
* [API]: add oyGuiMessageFunc() to use notify-send

... on oyMSG_ERROR. This allows Oyranos to emit serious errors to
a session notification system.
* [tools]: let oy-profiles use oyShowMessage()

should work like before
* [i18n]: update Deutsch