Language support to Course Page
 Changes to be committed:
	modified:   school-web/src/main/resources/messages_en.properties
	modified:   school-web/src/main/resources/messages_ru.properties
	modified:   school-web/src/main/resources/messages_ua.properties
	modified:   school-web/src/main/webapp/views/courses/student.jsp
	modified:   school-web/src/test/resources/messages_en.properties
	modified:   school-web/src/test/resources/messages_ru.properties
	modified:   school-web/src/test/resources/messages_ua.properties