now Orphanet, DrugBank, KEGGPathway and Reactome refs are seen as annotations as well, Test successful for Orphanet
added generic way to describe the API model of an annotation property and applied it to :PdbMapping "resolution" and "method" properties
added publications as entry references in t/l
fixed bug with #set directive
unescaped :accession and url values (bgee makes it necessary)
added  rdf:type Evidence to peptide mapping evidence
validated by Pascale., see mail 27.10.2014
gave a :EXP type to the evidence too
when :start object value is 0 (unknown), then the predicate is ignored, idem for predicate :end
fixed bug causing assignmentMethod and qualifierType to be mixed
adapted test after changes due to validation
Merge branch 'develop' into xrefs_to_annot