Added persistent database connection to the default sqlite database

neboard/settings.py

@@ -20,6 +20,7 b' DATABASES = {'
         'PASSWORD': '',                  # Not used with sqlite3.
         'HOST': '',                      # Set to empty string for localhost. Not used with sqlite3.
         'PORT': '',                      # Set to empty string for default. Not used with sqlite3.
+	'CONN_MAX_AGE': None,
     }
 }