Lab Queueing backend stuff & Patients at each station

[wwyi]

• Implemented the backend functionality for the new lab queue feature Tested: using postman to create, update, and get objects from the database
• Added a new 'soapCompleted' property to Patient Status object and use the completed timestamp to determine the number of patients that are at each station (Triage, Soap, Pharmacy) Tested: the server side database using postman and visually display the information