Fixed used namespace error of file service
Merge pull request #868 from sexnothing/develop

Widget carsouel update
Merge pull request #867 from linzongshu/develop

Fixed used namespace error of file service
Fixed bug mentioned in issue #886 #865 #862
Fixed bug of attachment download
Merge pull request #869 from linzongshu/develop

Fixed bug mentioned in issue #886 #865 #862
Search module update