Add "Include / exclude selected" for "Modify tests" setting

Oh goodness that should have been caught in testing; the title string never got written for that field.

Those boxes are for tests to turn off. I'll fix that in the next release.

I don't plan to add an include/exclude toggle, just because tests come and go and various sites have custom tests, so a simple "ignore" param is much easier to manage in the library. I'd consider a clever merge request if one came through.

Nice @itmaybejj! Turning off is perfect for me, thank you!