Clarification of terms

Clarification of terms in the document:

School		The term is used for this form of online school education via the Internet.
Courses		Each school has one or more online e-learning courses. Mentorkit LMS is not intended for the organization of classroom courses.
Class		This is a group of users in the system. Classes can be divided into subclasses / subclasses.
Users		Users are people who have a username and password and thus access to the school.