0. Another changing of DB scheme - removed 'version's columns for optimistic locking - soon I will do it through Hibernate; and also all ID now have 'bigint' data type.

1. Change model classes for more convinient work - thanks to Hibernate for the opportunity to resolve circular dependencies!
	- Department: now contains 'Employee director' + list of active employees
	- Project: contains a list of active employees instead of the usual 'employeesCount', which was obtained through a difficult request
	- Phone numbers: now there are only two fields: phoneNumber and mobile
	- Employees: no changing =)
	- Clients: adding 'Client', 'ClientsDao', 'ClientsService' classes

	All classes also have 'long id;' now -> it will be better than int.

2. There are no 'getLastInsertedId()' method in GenericDao -> Hibernate do this stuff for us automatically.

3. Removed 'validators' package - remade the same stuff on @Valid and Hibernate annotations @NotEmpty, @Pattern, @Min and etc.

4. Adding Maven's Hibernate, Spring-ORM dependencies for Spring-Hibernate intergation, Hibernate validation dependencies into server's pom.xml, and Apache 'commons-codec' dependency for correct Images

6. Described .hbm-files for model classes mapping

7. Adding 'sessionFactory' bean into spring-context

8. Transactional management now going through Hibernate's sessionFactory

8. Adding pagination through Hibernate's Criteria API.

9. Removed ConnectionHolder -> I don't need it anymore.

10. Temporarily removed "greeting" from the JSP-pages

(<div class="hello-message">
            Hello, <%= ((Client) session.getAttribute("WEBAPP_CLIENT")).getLogin() %> !
        </div>)

11. Changed Authentication class -> now there are a lot of functions with authentication

12. Removed LoginServlet -> Now we have ClientsController

13. Removed AuthenticationFilter -> Now we have AuthenticationInterceptor

14. Removed all RowMappers -> I don't need them anymore

15. Removed JdbcTemplate bean

16. Removed Md5Hasher -> now this logic in AuthenticationClass