remove stuff that was moved to providers (bug cleanup)
stop api filtering by bango (bug 987664)
Merge pull request #1908 from ngokevin/master

fix content ratings edit page, fix pingback verify data in case of empty objs (bug 990732/975200)
fix content ratings summary page descs/interactives (bug 990763)
use media queries over request.DESKTOP in revtools (bug 985754)
fix dev iarc command test
Merge pull request #1905 from andymckay/987664

stop api filtering by bango (bug 987664)
Commit from Mozilla Verbatim by user petercpg@mail.moztw.org.: 4920 of 4920 strings translated (0 fuzzy).
Merge pull request #1890 from andymckay/cleanup

remove stuff that was moved to providers (bug cleanup)
Make /fireplace/search/featured/ use fireplace-specific serializers for apps in collections (bug 989405)
Merge pull request #1898 from diox/fireplace-collections-serializer

Make /fireplace/search/featured/ use fireplace-specific serializers for apps in collections (bug 989331)
Cachebust icons according to their hash (bug 985290)
Merge pull request #1896 from diox/cachebust-icons-by-hash

Cachebust icons according to their hash (bug 985290)
in-app product management in developer pages (bug 956334)

fixes #1900
Merge pull request #1909 from ngokevin/revmobile

use media queries over request.DESKTOP in revtools (bug 985754)
force lazy strings
bump CONN_MAX_AGE
Switch back to mysql_pool.

This reverts commit b741107f2b56a2b6bcae5eab6c4e54648d083882.
temp move requirement
allow CORS on feed endpoints