[xwiki-users] How to add new categories to the Event Calendar? And why are my Tags not appearing?

Hi all, First issue: I'm currently working with XWiki 1.4M1 (the standalone installation) and when I go the Event Calendar I get an empty Category list in the New Event area. I did already some research but I just can't find the place to add new categories which can be used by the Event Calendar. I found the page where you can add categories to the Blog (/bin/Blog/Categories) but I was wondering if there is a similar page for the Event Calendar? Or do I need to hard-code the list in /bin/XWiki/CalendarSheet?viewer=code? Second issue: I have added tags to pages in my wiki but they are not appearing on the Tags page. I renamed the xwiki folder (in webapps) but I can't imagine that this is the problem, to be sure I searched for xwiki/bin in all the files and replaced it were necessary. But still the tags are not appearing, who knows what to change? Thank you! Gijs.