Group tiles was added
Changes to be committed:
	modified:   pom.xml
	modified:   school-dao/src/main/java/school/dao/StudentDao.java
	modified:   school-dao/src/main/java/school/dao/implementation/StudentDaoImpl.java
	modified:   school-dao/src/test/java/school/dao/implementation/StudentDaoImplTest.java
	modified:   school-model/src/main/java/school/model/Student.java
	new file:   school-service/src/main/java/school/service/StudentService.java
	new file:   school-service/src/main/java/school/service/implementation/StudentServiceImpl.java
	new file:   school-service/src/test/java/school/service/implementation/StudentServiceImplTest.java
	new file:   school-web/src/main/java/school/controller/StudentController.java
	modified:   school-web/src/main/webapp/WEB-INF/tiles.xml
	new file:   school-web/src/main/webapp/views/groups/student.jsp
	new file:   school-web/src/main/webapp/views/groups/teacher.jsp