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).