No Bug: Fixing DAU ping race condition on app activation.

[jhreis]

I need to build out some better unit tests for this, however some larger architecture stuff will probably need to be adjusted a bit.

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[danishjafri88]

The change is required, let take a case:
Time fires 1st time: Calls the sendPingToServerInternal and processingPing is set as true.
before the api call is done (Should not if the time is more than api timeout but for architecture sake). The timer fires again and there is no check to make sure the api call is not done.

[jhreis]

@danishjafri88 yeah, good point, will adjust.