Adds Medical Hologram functionality to Medical Penlight

### Adds Medical Hologram functionality to Medical Penlight
>1. Penlight can now create a hologram at range on non adjacent tiles. **Only activates on tiles that a mob is inside.**
>2. Makes a ping sound when the hologram is created, and displays a message of who created it
>3. There's a **_10 second_ cooldown**

Just generates a little "Hey, pay attention to me, I'm a doctor".

![stop_fucking_pulling_it](https://cloud.githubusercontent.com/assets/4465459/5327776/cfab7e70-7d14-11e4-80c5-3de3d0c6470d.gif)