[Click Interaction tests] Restructure nesting of callback tests
[Click Interaction tests] Restructure nesting of callback tests

Also make error messages generic to both mouse and touch cases.

NextTuesday/plottable,softwords/plottable,NextTuesday/plottable,palantir/plottable,softwords/plottable,palantir/plottable,palantir/plottable,palantir/plottable,softwords/plottable,NextTuesday/plottable