"upload" event action is overused

[ianb]

We're using a GA event action of "upload" for a bunch of states. This causes weird reporting.

This one puts status into eventValue, but that's weird too (elsewhere eventValue is kb):

      sendEvent("upload", "failed-status", {eventValue: response.status});

That should be a label instead. E.g., sendEvent("upload-failed",status-${response.status})