Added methods for changing/updating large numbers of RDF triples.

* [ATOM_EXT,EXT] The split argument for split_atom_[exclusive,inclusive]/3 can be both an atom and a list of atoms.
* [META_EXT,EXT] user_interaction/4 now has the hidden option 'A' for processing all remaining tuples.
* [META_EXT,EXT] Make user_interaction/4 a meta-predicate.
* [RDF_CLEAN,NEW] Added rdf_convert_datatype and rdf_split_string/4.
* [WALLACE,FIX] Added module import.
* [WEB_CONSOLE,FIX] Added module import and fixed CSS file name.
* [WWW,EXT] Added DIV styles for images and image descriptions to the generic Wallace CSS file.