-`im_secret_key`: optional Secret Key for Django app, defaults to random 56char string recreated on every run (This will invalidated current open sessions)
-`im_domain`: the domain this app will run on (Needed for django's ALLOWED_HOSTS), default localhost
-`im_db_name`: database name, defaults to 'im'
-`im_db_user`: database user, defaults to 'im'
-`im_db_password`: database password (optional)
-`im_db_host`: database server, defaults to 'localhost'