The "thank Sarge for this release" release

• Removed various checks where defindex is false (which is TF_WEAPON_BAT) and changed the array iteration terminator to -1 instead of 0.
• Checked that Australium properties exist through SOCAttribs (item server) instead of just applied to the weapon (e.g., via TF2Attributes, dynamically?).
• Removed code that mangled bot weapons, setting owned account IDs to 0.