Fixing bug sorting news items with nil created_at
Fixing bug sorting news items with nil created_at

kidaa/eol,DanielZhangQingLong/eol4,DanielZhangQingLong/eol4,DanielZhangQingLong/eol4,kidaa/eol,DanielZhangQingLong/eol4,kidaa/eol,kidaa/eol,DanielZhangQingLong/eol4