[us5301] added documentation to indicate entities as public (for session,course, courseOffering and gradingPeriod
[us5301] added documentation to indicate entities as public (for session,course, courseOffering and gradingPeriod

inbloom/secure-data-service,inbloom/secure-data-service,inbloom/secure-data-service,inbloom/secure-data-service,inbloom/secure-data-service