[MERGED PR] Some traitor objective wording adjustments and slight code cleaning

[eX_n0x]

So if someone gets on the shuttle when enters hyperspace the hijack objective is failed? Or can you kill them and toss them into space before it reaches centcom to have it still count?

Pretty much as Zone has stated. Mainly just to help make it a bit more clear about what will make you fail or succeed in your objectives. As for the hijack ones, you don't even need to throw their body out. All that is needed is whoever are the ones that are suppose to be on the shuttle are the only ones that are alive when it arrives. If everyone on the station made their way in you should still get the objective if you manage to kill them all before you get to Centcom.