tests managment changes
add select count of registred users by date and add diagram in admin main page
add question entity dao service
add method getUserMarkByQuestion
working on TestStatistic entity. Add Dao and Service methods
add test
working on testStatistic functionality. In progres.
add tests
working on userTestStatistic.jsp
changes in TestStatistic entity
working on adding test_statistic table via liquibase. but it doesn't want to create foreign keys
add admin and question tests
commit
merge master
add foreign keys for test_statistic table
add questions to liqBase
Merge branch 'master' into vetall1
fix rating and fix liqubase
merge master
fix test