A change to "Sixth Sense" perk

Einzelganger7: If they make it available for "free", the current one that we can get could be renamed and become like an "upgrade" for the free sixth sense, by notifying a bit faster that we got spotted, something like one-two seconds earlier and also telling you when you are hidden once again. On the console version the sixth sense icon appears when we get spotted just like in ours but the difference is that the icon remains on the interface until you are hidden, and of course when that happen then the icon disappears again.