Objetive Fixes (HONK!)

>Base Type and Unique objectives are no longer added
>Last item in the loot list was not checked
>Fixed all variants of cosplay aside from the random one appearing
>Tweak antag_types on a bunch of objectives based on community feedback.

Fixes #98
Merge pull request #117 from Profakos/Objective-Assignment-Fix

Objetive Fixes (HONK!)