HPCC-10934 Allow download of error/warnings

Fixes HPCC-10934

Signed-off-by: Gordon Smith <gordon.smith@lexisnexis.com>
Merge pull request #5472 from GordonSmith/HPCC-10934

HPCC-10934 Allow download of error/warnings

Reviewed-By: Miguel Vazquez <miguel.vazquez@lexisnexis.com>
Reviewed-By: Richard Chapman <rchapman@hpccsystems.com>