Exploitable alternative

Players are now able to add exploitable information about their characters under the Setup > Antag option menu.

Syndicate agents can access this information from the syndicate uplink screen.

Based on http://baystation12.net/forums/viewtopic.php?f=5&t=11149 and comments from #6241

![Syndicate Uplink](https://www.dropbox.com/s/twvb9m086mgdid8/Antag-Uplink.png?dl=1)
![Information List](https://www.dropbox.com/s/5azimhmk6czex8y/Antag-Submenu.png?dl=1)
![Information Entry](https://www.dropbox.com/s/dkei03n2daz59y2/Antag-Entry.png?dl=1)