Translation for group edit
 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/resources/js/group-edit.js
	modified:   school-web/src/main/webapp/views/groups/head-teacher-edit.jsp
 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/tiles/header.jsp
Merge branch 'master' of https://github.com/vsomov/SchoolPortal