Include u.id for users without avatar
Include u.id for users without avatar

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