Add export button
Add contest code export function
Skip export codes that out of contest duration
Add missed braces
Put status id at the front of file name
Rename exportCode to getStatusInformationDTOList
Merge pull request #192 from mzry1992/contest-code-export

Export codes in contest
Add contest rank list view
Export rank list as excle file
Merge pull request #195 from mzry1992/contest-report

Contest report
Fix null point exception in rank list export function
Merge pull request #196 from mzry1992/fix-contest-reanklist-bug

Fix null point exception in rank list export function
Move judge core binary file to /usr/bin, remove config.ini.
Add settings table in database
Add settings db tools
Rename settings to setting
Rename SettingsService to SettingService
Refactor setting tools
Remove data and work directory in WEB-INF
Auto create work path and temp path