replace IDE

git-svn-id: http://hustoj.googlecode.com/svn@2086 19ab8b60-bd6c-11dd-baed-41e496641fac
Edited wiki page Configuration through web user interface.

git-svn-id: http://hustoj.googlecode.com/svn@2087 19ab8b60-bd6c-11dd-baed-41e496641fac
$OJ_SHOW_DIFF false to disable WrongAnswer differ

git-svn-id: http://hustoj.googlecode.com/svn@2088 19ab8b60-bd6c-11dd-baed-41e496641fac
chinese students need help

git-svn-id: http://hustoj.googlecode.com/svn@2089 19ab8b60-bd6c-11dd-baed-41e496641fac