fix for errors which do not have an associated jobName
add \u000B and \u000C (Line Tab and Form Feed) to list of control characters to be scrubbed
Applied patch https://github.com/TexasDigitalLibrary/Vireo/pull/45.patch by Drew Heles with a few minor changes. Updated tests to reflect new code.
Merge branch 'fix_error_log' of https://github.com/dheles/Vireo