Play something that isn't assistant to be an antag.

![ss13 greyplauge](https://cloud.githubusercontent.com/assets/4081722/4033603/3fe7ac24-2c7d-11e4-8ffe-9c631395df65.png)
this shouldn't be a thing ever

this borrows the same config options for sec antag to reduce snowflake levels

reasons why assistants should lose antag:
![ss13 greyplauge](https://cloud.githubusercontent.com/assets/4081722/4033603/3fe7ac24-2c7d-11e4-8ffe-9c631395df65.png)

this will help make the greytiders/"suicide-cause-not-antag"ers/validhunters play actual jobs and have a chance of actually being useful to the station

and allow for assistant to be the new player job it was intended to be

Assistant maint access is the same config option as sec maint access. no real reason not to make the antag statuses work the same, it cuts down on snowflake and lines of code.