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
Add LOG_OFF flag in judge core
Add invited type contest permission check function
Fix broken testes
Show teams in rank list
Show team members submit status in status list
Return to contest list page if user logout in contest
Fix template url
Fix code href
Sort files manually
Use absolut path in BBS link
Redirect to FUCKIE page when user use IE 6, IE 7 or IE 8
Refactor contest permission system and add javadoc
Merge pull request #182 from mzry1992/contest-permission

Refactor for The 12th UESTC Programming Contest