Highlight Event Hub button when a new event (specifically Objectives) start

<TGE> Darxide

I regularly miss when objective events start. This leads to wasting chrons, cadet tokens, gauntlet rounds, etc on for daily missions and whatnot. The Event hub should highlight when there a new event starts (not just when it's added to the hub) to give a heads up. When you view the event for the first time it should remove the highlight.