Replaces the buff icons with perk & gobblegum icons from Call of Duty Zombies

Requested by @daveyw

Edge = Deadshot Daiquiri/Double Tap II
Grit = Juggernog
Rush = Stamin-Up
Invulnerability = Phoneix Up
ECM = Temporal Gift
High Grain = Cache Back
Encumbrance = Fear in Headlights