removing and correcting several tests
Merge branch 'master' of git://github.com/romulojales/simple-virtuoso-migrate into romulo-master
Getting tests corrections made by romulojales
Updating rdfextras to 0.4 and rdflib-sparqlstore to 0.4; Getting tests changes made by @romulojales
Adding requirements_dev.txt file to make the dev setup a little by easier