Changes the buff icons to be Payday 2 themed, with old skill icons replacing them.

Requested by @malaket

Damage Multiplier - Oppressor
Damage Resistance - Brother's Keeper/Iron Man/Thick Skin/Tough Guy
Dodge Chance - Duck and Cover
Armor Penetration - The Professional
Head Games - Silent Killer
Damage Immunity - Bulletproof
ECM - ECM Overdrive
Encumbrance - Transporter