fix mimetype for s3 files
fix mimetype for s3 files

darconny/liveblog,ancafarcas/liveblog,ancafarcas/liveblog,superdesk/liveblog,darconny/liveblog,darconny/liveblog,superdesk/liveblog,superdesk/liveblog,darconny/liveblog,hlmnrmr/liveblog,superdesk/liveblog,hlmnrmr/liveblog,liveblog/liveblog,hlmnrmr/liveblog,liveblog/liveblog,liveblog/liveblog,ancafarcas/liveblog,liveblog/liveblog,ancafarcas/liveblog,hlmnrmr/liveblog,liveblog/liveblog