Revert "Fixes: #2616 reorganise the help from fusiondirectory-setup"

This reverts commit 3b5ace09d01bbf14a179431b7d8990fa6ce0bb9e.
Fixes: #2510 FusionDirectory should provide valid HTML
Fixes: #2510 Adapted HTML code to be valid

Replace font by divs, removed summaries, a few other cleans
Fixes: #2510 Fixing small HTML errors. Using simplePlugin mainInc for user