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.
add test cases for LanguageService.
Merge pull request #185 from pfctgeorge/tests

add test cases for LanguageService.
add test cases for ArticleService.
Merge pull request #186 from pfctgeorge/tests

add test cases for ArticleService.
add test cases for CompileInfoService.
Merge pull request #187 from pfctgeorge/tests

add test cases for CompileInfoService.
Inherit type contest added