Revert "Chapter 19 - Removed unused method calls. Single end-to-end test still failing"

This reverts commit 31ba62fdfd6dfd60a0bd65b41e950107e0959a32.
Revert "Chapter 19 - Unignored end-to-end test and temporarily commented out assertions relating to first auction only"

This reverts commit 52d5172c87d178c97798a473e012924ce2e13935.
Revert "Chapter 19 - Added logging for failures when communicating with the auction. Temporarily ignored failing end-to-end test to enable check-in"

This reverts commit 8e6ab44e47e8439a94710dc52ded51ea1596bbca.