Fix broken User link name (it was possible to change link name to one that was already used, validation was not working correctly).
Patch by: Pawel Solyga
from django.db.backends import BaseDatabaseClient
from django.conf import settings
import os
class DatabaseClient(BaseDatabaseClient):
executable_name = 'sqlite3'
def runshell(self):
args = ['', settings.DATABASE_NAME]
os.execvp(self.executable_name, args)