Added custom models for Soldier, Demo, and Heavy's primary weapons.
Added a particle that displays when a player spawns.
> The idea for these changes is to help communicate to players that they aren't using standard loadouts. Soldier, Demo, and Heavy were picked first because they had conceptually easy to edit and were the ones who I was solid on their loadouts.
Changed powerup text from displaying when you got a powerup to actively displaying which powerup you have.
> As with all powerup changes since last update, this doesn't apply to Pyro.