Redirect appengine /changes to new result feed, remove old result feed

Change-Id: I995e506b7a8d877368da5a62c9b93ecf20e2b2ce
Reviewed-on: https://dart-review.googlesource.com/c/dart_ci/+/117741
Reviewed-by: Jonas Termansen <sortie@google.com>
4 files changed
tree: b8439640711ede69048b0425e2209baa9732c2bb
  1. appengine/
  2. functions/
  3. results_feed/
  4. .firebaserc
  5. .gitignore
  6. firebase.json