perl tidy errors persist in Problem Editor

[pstaabp]

In the problem editor, use a problem and include a syntax error (like leave off a ;)

If you go to perltidy it from the Code Maintenance tab, on the right, there will be the output from the perltidy script showing the error location.

If you fix the error and rerun perltidy, the error will persist on the right side. It should either return to the problem output or some indication that the perltidy was successful.

[drgrice1]

I guess one side effect of this approach is that if you first use PG critic on a problem, and then run perltidy on the problem, the problem will also be rendered, replacing the PG critic results. I am okay with that though.

[somiaj]

Fixed in #3015.