Add action keyword arg to Settings.get_dotted()
Add action keyword arg to Settings.get_dotted()

This is passed through to Settings._traverse() to allow modification of
the retrieved value or some other kind of processing before returning
the value.

Intended mainly for internal use.

NOTE: It would be better if this was a keyword-only arg, but those
      aren't supported on Python 2 :(

wylee/django-local-settings