Adds blinking emergency exit holosigns to major departmental exits, adds...

Adds blinking emergency exit holosigns to major departmental exits, which are activated by a switch in the respective head's office. 
![](http://puu.sh/aiJd5/d92f0d5bfa.gif)

Also adds an informative poster on how to detect AI rampancy in the cyborg recharge room, because [reasons](http://puu.sh/aiJot/f15d1f1607.png).
![](http://puu.sh/aiw2K/203f3eb153.png)
Let me know if you have any feedback, criticism, or comments.