Book patients in hospital

[bricksphd]

We need to have patients leave two ways--the way they came and by being booked into the main hospital.

[rnarducci]

What does being booked into the main hospital entail? Being assigned a room and keeping it for the rest of the simulation?

[rnarducci]

Have basic functionality for booking patients into the main hospital. It is currently set up that a nurse still escorts them to the main entrance (albeit immediately), and it is set up for ESI2 patients.