Hi,
1. It comes if it is finished

The problem is that i have lot of work at company and home. So i have not much time at the moment but i am working on it.
2. You could set the default language for the system in the admin interface. Go to configuration and edit the value for knowledgeroot.language to your language. If you have translated all to slovak it would be nice if you could send me the translation so that i could at the translation to the next release.
3. Over the admin interface go to the extension section. Disable fckeditor and install and enable tinymce. So tinymce will work as editor.
4. I did not understand this question?!
regards,
Frank