delete "public" in interfaces methods; fix date in filename bug
Merge branch 'develop' of https://github.com/alexey-kozlenkov/ExadelPractice into develop
Merge branch 'develop' of https://github.com/alexey-kozlenkov/ExadelPractice into develop
code refactor
add set mail sender functionality
Merge branch 'develop' of https://github.com/alexey-kozlenkov/ExadelPractice into develop

Conflicts:
	src/main/java/com/exadel/studbase/dao/IStudentViewDAO.java
	src/main/java/com/exadel/studbase/service/IStudentViewService.java
modify sender username format
Merge branch 'develop' of https://github.com/alexey-kozlenkov/ExadelPractice into develop
ListController rebuild;
Add header template, employee header
Merge branch 'alan' into develop

Conflicts:
	src/main/java/com/exadel/studbase/web/controller/TestController.java
Fix checkAll bug
Database update
Merge branch 'develop' of https://github.com/alexey-kozlenkov/ExadelPractice into develop

Conflicts:
	src/main/java/com/exadel/studbase/service/impl/MailServiceImpl.java