Add getID features (#59)
Add getID features (#59)

* Add getID features

When type
Students/username
Teachers/username
Classes/coursename
Reviews/coursename
Administrators/username
It should return a specific data

* Change to ObjectID

Instead of using name, we change it into using name. And by using ObjectID, it should return a distinct result

ltcarbonell/Rater-System,UF-COP5035/Rater-System,christopher1030123/Rater-System,christopher1030123/Rater-System,christopher1030123/Rater-System,ltcarbonell/Rater-System,ltcarbonell/Rater-System,UF-COP5035/Rater-System,UF-COP5035/Rater-System