Merge "Protect against multiple starts of device index job" into pi-dev

    @Override

    public boolean onStartJob(JobParameters params) {

        if (DEBUG) Log.d(TAG, "onStartJob");

        if (!mRunningJob) {

            mRunningJob = true;

            Thread thread = new Thread(() -> updateIndex(params));

            thread.setPriority(Thread.MIN_PRIORITY);

            thread.start();

        }

        return true;

    }