remove kappname + package, no longer used
use entities from kdoctools (url, mime)
bump date + releaseinfo
replace &kde; with &Qt; and &kf5-full; and &plasma;
fix wrong links
fix changed gui strings
cleanup/fix scripts
replace common menu items with link to fundamentals
imported a few usefull faq's from userbase
remove obsolet appendix installation

screenshots except the ones in this RR already updated

Questions (see also new FIXME's in diff):

1. What to do with https://userbase.kde.org/Konversation/Scripts/Scripting_guide

2. Script errors: Error: No email folders were found that had a name containing 'foo' Error: Unable to retrieve clipboard contents from Klipper. What is wrong here?

checkXML5 index.docbook