Code Documentation for Service and Web Service Layer.
Merge branch 'master' of https://github.com/nancywatta/HealthConnect

Conflicts:

HealthConnectServer/HealthConnect/src/main/java/aucklanduni/ece/hc/servi
ce/impl/AppointmentServiceImpl.java

HealthConnectServer/HealthConnect/src/main/java/aucklanduni/ece/hc/webse
rvice/AppointmentRestController.java