Ability to call startNotifier multiple times

[gamenerds]

Hi Tony, can you add a check that if we already started the notifier to ignore further calls to the method? I'm seeing error text in the console right now. I have multiple threads attempting download and they'll all fail at nearly the same time, but either one of them can call startNotifier upon failure. This just lets me avoid creating my own global variable to track this :P

[tonymillion]

I'll look into this