Merge branch 'develop' into 'develop'

entity/IncomingTranslation.go

entity/ReturnFormat.go

main/main.go

main/sparql-mock-result.json

usecases/arangodb/cover.html

usecases/arangodb/data/.gitignore

usecases/arangodb/entity/document.go

usecases/arangodb/executeQuery.go

usecases/arangodb/executeQuery_test.go

usecases/arangodb/queryExecutor.go

usecases/arangodb/test.sh

usecases/neo4j/entity/types.go

usecases/neo4j/executeQuery.go

usecases/neo4j/executeQuery_test.go

usecases/neo4j/queryExecutor.go

usecases/sparql/entity/result.go

usecases/sparql/executeQuery.go

usecases/sparql/executeQuery_test.go

usecases/sparql/interface.go