Old jumper models and sounds

[RNC1839]

Figured I'd make a new topic so it doesn't get buried (also AI told me to)

Full fix including sounds and bp icons: http://cdn.jumpacademy.tf/?res=oldjumpers_full.zip

note the sticky jumper sounds ever so slightly off when detting 2 stickies, but whatever.

Again shoutouts to Christoffer and AI for doing the actual work
Quick update: added the old backpack icons