ricerca email case insensitive, in questo modo non triggero gli integrityerror dovuti all'email univoca
ricerca email case insensitive, in questo modo non triggero gli integrityerror dovuti all'email univoca


Former-commit-id: 38055b14f95c827d40618fe5683c4dcc61e9bdfe
PythonSanSebastian/epcon,barrachri/epcon,barrachri/epcon,artcz/epcon,leriomaggio/pycon_site,malemburg/epcon,malemburg/epcon,malemburg/epcon,pythonitalia/pycon_site,barrachri/epcon,pythonitalia/pycon_site,malemburg/epcon,pythonitalia/pycon_site,PythonSanSebastian/epcon,barrachri/epcon,PythonSanSebastian/epcon,PythonSanSebastian/epcon,barrachri/epcon,leriomaggio/pycon_site,barrachri/epcon,leriomaggio/pycon_site,artcz/epcon,artcz/epcon,matrixise/epcon,EuroPython/epcon,matrixise/epcon,artcz/epcon,pythonitalia/pycon_site,malemburg/epcon,leriomaggio/pycon_site,malemburg/epcon,matrixise/epcon,PythonSanSebastian/epcon,matrixise/epcon,pythonitalia/pycon_site,artcz/epcon,artcz/epcon,PythonSanSebastian/epcon,EuroPython/epcon,matrixise/epcon,EuroPython/epcon,EuroPython/epcon,matrixise/epcon,leriomaggio/pycon_site