Integration of Spring security:
- add dependencies to spring security 3.0 components to pom.xml
- update web.xml with Spring Security filter
- update spring-context.xml with spring security configuration
- specify pathes which should be accessible for authorized user only
- use hardcoded username and password
Integration of SpringSecurity.
- Remove filter classes from the project
- Change login to old value "login"
Integration of SpringSecurity.
- Remove FilterInitUtil class from the project because it was used only by filters
Integration of SpringSecurity.
- add app context to urls, so now all of them works correctly.
Integration of SpringSecurity.
- remove some extra data from web.xml: now paths-set is not used
Merge pull request #8 from nik515/springsecurity

Integration of Spring security: