add statuses for normal type user.
fix typo.
make status test data more various.
add test cases of countProblemUserTried.
add test cases of countProblemUserAccepted.
add test cases of findAllUserTriedProblemIds.
add test cases of findAllUserAcceptedProblemIds.
add test case of countUsersTriedProblem.
add test cases of countUsersAcceptedProblem.
add test cases of count.
add test cases of getStatusList.
add test case of getStatusInformation.
Merge pull request #184 from pfctgeorge/tests

add test cases for StatusService.