tests managment changes
commit
fix rating and fix liqubase
merge master
fix test
fix test controller and pages
Change add testService to QuestionTest
correct errors in tests
add java doc
add method get right answers to question service
Merge branch 'ivan'
fix add controller
merge master
adapt tests page for new entities, fix option
fix bugs
fix liqubase
fix merge conflicts
add test management
changes in userTestStatistic.jsp, add test for TestStatistic  Dao and Service, add javadocs