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

![Information Setup](https://www.dropbox.com/s/v0ya7a5674mg1a2/Antag-Setup.png?dl=1)
![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)
I don't like this replacetext-bit at all but I don't know how else to make NanoUI properly display newlines instead of the literal "\n". This also affects employment, security, and medical records as these also accept newlines from players.
If anyone has suggestions on how it might be possible to make this global I'm all ears, otherwise I'll have to add this "fix" for the mentioned entries as well.