Txt results not copied to dashboard so cannot rebaseline them

[markcmiller86]

Describe the bug

When we run nightly tests, for any test that fails, we copy the currently produced image to the dashboard. However, we are not doing this for txt results. We do get the HTML diff of the txt results there but not the original .txt files which then makes it impossible to re-baseline to the new (current) result.

I tried to parse the copying logic in visit-copy-test-results.py but was unable to understand where to fix it.