fix: replace odd quote character

While using the redland "rapper" rdf parsing library, a syntax error was flagged:

" ... syntax error at '�' "
fix: removed commas from turtle collection statements

Each object in a Turtle collection is separated by whitespace and not a comma

See: http://www.w3.org/TR/turtle/#collections
fix: converted all dublin core term prefixes to "dcterms"
fix: resolved syntax errors related to urn, doi, and prism

DOI's explicitly do not provide a namespace URI due to the use of the URN system (see: http://en.wikipedia.org/wiki/Uniform_resource_name#Absence_of_DOI_namespace). However URN's are not a namespace, but a DNS level registry that is not widely addopted.

An attempt to use http://dx.doi.org/ as a DOI namespace failed because turtle does not allow slashes after a prefix. Resolution was to use a dereferencable URI.
fix: added missing predicate suffix for pdf resource
rf: regenerated rdf serialization from turtle using rapper