Part of #1971384: [META] Convert page callbacks to controllers
For instructions on how to convert a page callback into a controller, see the WSCCI Conversion Guide.
Attached patch for this issue included in #1979004: Convert tour_test_1() to a Controller.
It totally makes sense to convert both in the same issue, so let's mark this as duplicate of #1979004: Convert tour_test_1() to a Controller
Added link to META task
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