Added dependencies to Maven.
Added cascade updating for domain classes.
Added transactions configuration to spring-config.xml and test-spring-config.xml
Updated web.xml:
set correct doctype and web-app root element;
added spring-mvc.xml to contextConfig.
Added OpenSessionInViewInterceptor to spring-mvc.xml.
Updated spring-tiles.xml: shorted config.
Added Transactional annotations to Dao implementation classes methods.