Revert "New region for testing purposes (bug 1040154)"

This reverts commit 082c3161756e6ae04894711abd4490d04a498af4.
Playing catch-up by excluding recently added regions (bug 1040154)
Fix typo (bug 907910)
Update landfill settings set CELERY_ALWAYS_EAGER to True.
remove iarc waffle (bug 932019)
Merge pull request #2330 from ngokevin/iarc

remove iarc waffle (bug 932019)
add background color to FeedShelfIndexer
use FeedPreviewSerializer to deserialize feed app previews
fix iarc switch tests
Commit from Mozilla Verbatim by user steekid.: 1947 of 1947 strings translated (0 fuzzy).
Merge branch 'master' of ssh://github.com/mozilla/zamboni
Commit from Mozilla Verbatim by user jasnapaka@jasnapaka.com.: 1923 of 1947 strings translated (0 fuzzy).
Commit from Mozilla Verbatim by user jasnapaka@jasnapaka.com.: 1932 of 1947 strings translated (0 fuzzy).
Replace amo_user by user, simplyfing some code along the way (bug 1030981)
Merge pull request #2324 from diox/remove-amo-user

Replace amo_user by user, simplyfing some code along the way (bug 1030981)
Don't linkify the validation context (bug 1030849)
Cleanup gear menu in reviewer tools (bug 980349)
Merge pull request #2294 from mstriemer/reviewers-hidden-settings-980349

Show the settings gear in reviewer tools tablet width (bug 980349)
Update all ES queries to use Elasticsearch DSL (bug 1036168)
Removed elasticsearch.trace logging