show view does json-ld in OA and IIIF flavors
remove Triannon::Annotation model methods for has_target and has_body as all this is now done with RDF::Graph object; also tweak show view
add jsonld_oa and jsonld_iiif methods to Triannon::Annotation model to return string with url instead of inline context
version upped to 0.3.1 to fix show view and be able to manipulate context for jsonld (issue #81)
Merge pull request #94 from sul-dlss/show-view

Show view displays turtle, jsonld (in both OA and IIIF context flavors)