PublicShow -- ClioPatria help system

This module serves the wiki-source based help-pages from cliopatria(web/help) and integrates SWI-Prolog's PlDoc literate programming system to provide documentation of the source-code.

Source prolog:doc_directory(+Dir) is semidet[multifile]
True if we allow PlDoc to serve files from Dir. This allows serving all files in the ClioPatria hierarchy.
Source cliopatria:menu_item(-Item, -Label) is nondet[multifile]
Extends the help popup with links to the source-code and the HTTP services.
Source user:body(+Style, :Body)// is det[multifile]
The multi-file implementation defines the overall layout of HTML pages with the Style pldoc(_).