Header was modifyed
 Changes to be committed:
	modified:   school-web/src/main/java/school/controller/CourseController.java
	modified:   school-web/src/main/java/school/controller/CourseRequestController.java
	modified:   school-web/src/main/java/school/controller/GroupController.java
	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/WEB-INF/tiles.xml
	modified:   school-web/src/main/webapp/resources/img/crumbs_logo.png
	modified:   school-web/src/main/webapp/views/groups/head-teacher.jsp
	modified:   school-web/src/main/webapp/views/groups/student.jsp
	modified:   school-web/src/main/webapp/views/groups/teacher.jsp
	new file:   school-web/src/main/webapp/views/tiles/header_new.jsp