KHelpCenter adaptation for the new TDEUI

Hi, I decided to forget about the glossary pages part of the help center. It is too much of a mess, and I prefer to not make an even bigger mess with it. It is hard to integrate, parts are coming from many files that I am not too sure if they are really used or not and they are too outdated. I updated my system and I can confirm that only a part of the help center has been updated for the new TDEUI adaptation. As of what is to modify to get the rest of the help files adapted, I don't know much how to do it... I did a lot of searches with Kate's ''find in files'' feature for the ''shadow'' string, but I could find nothing interesting. The ''shadow'' string should be good for spotting the right files, because the header title of the help files do have a shadow. Thank you! -Alexandre