When bisecting, always mark the current commit as good/bad, not the selected

For marking as good or bad, the current commit is pretty much always the one you
want to mark, not the selected. It's different for skipping; sometimes you know
already that a certain commit doesn't compile, for example, so you might
navigate there and mark it as skipped. So in the case that the current commit is
not the selected one, we now offer two separate menu entries for skipping, one
for the current commit and one for the selected.

pkg/integration/tests/test_list.go

@@ -32,6 +32,7 @@ var tests = []*components.IntegrationTest{
 	bisect.Basic,
 	bisect.ChooseTerms,
 	bisect.FromOtherBranch,
+	bisect.Skip,
 	branch.CheckoutByName,
 	branch.CreateTag,
 	branch.Delete,