added translation from API declaration to RWADef (https://github.com/restlet/apispark/issues/2216)
fixed Swagger 1.2 to RWADef translation issue with duplicate representations (https://github.com/restlet/apispark/issues/2216)
Merge pull request #990 from restlet/issue2216_import_swagger1_studio

Convert a swagger 1.2 ApiDeclaration to a Definition