Removed createClassController and matchUserController folders
Removed all the add methods and change to check methods in all DAOs except ClassDAO
Converted all the check methods in the relevant DAOs to accept JSONObject as argument
Changed the query statements in EnrolledDAO->getEnrolled and ClassDAO->checkClass to consider the SchoolID
Added updateLastLogin method into UserDAO to update the last login data
Added updateLastAccessed method into ClassDAO to record the last accessed data for a specific class
Standardized the naming convention for the various data to the same naming convention as in DB to minimize format exception