allow the floor health scanner in medbay to open the doors

[salix_catus]

So...

• Move floor health scanner to be in front of doors.
  
• Floor health scanner alerts medical staff via PDA.
  
• Floor health scanner stores medical information.
  
• Another health scanner add-on - one that lets you store and view medical records.
  
• Health monitor implants alert medical staff via PDA if someone is in deep red/crit.