fix url to slackin and spaces
fix url to slackin and spaces

inteligencia-coletiva-lsd/pybossa,geotagx/pybossa,PyBossa/pybossa,jean/pybossa,geotagx/pybossa,PyBossa/pybossa,inteligencia-coletiva-lsd/pybossa,OpenNewsLabs/pybossa,OpenNewsLabs/pybossa,jean/pybossa,Scifabric/pybossa,Scifabric/pybossa