Job Code popup doesn't display on download after preference change

[Monty Taylor]

Running the latest alpha, when a folder hierarchy has a Job Code in it, the Job Code prompt is not displayed and the photos are downloaded into a place without the code. For instance:

<Image date (YYYY)>/<Job Code>

put photos into $PHOTO_ROOT/$YYYY instead of $PHOTO_ROOT/$YYYY

Digging in a little, I think it's because

        self.job_code = JobCode(self)

is done in init, and in JobCode

        self.need_job_code_for_naming = parent.prefs.any_pref_uses_job_code()

is done in the constructor. SO - if preferences are changed the RapidWindow object doens't make a new JobCode and then the boolean is always false.

If I stop rapid-photo-downloader and start it again after having made the preferences changes, it prompts for JobCode as expected.