Update landfill urls
Add --site option to install_landfill
Merge branch 'master' of https://github.com/mozilla/zamboni into update-landfill-urls

Conflicts:
	apps/amo/management/commands/install_landfill.py
Revert "Add --site option to install_landfill"

This reverts commit 232250ceba5a751408f4b5888103791779a033d4.
Remove references to addons landfill URL
fix preview test
make admin usable again (bug 1026818)
Allow CORS requests for mini manifests
Removed some old hackery in manage.py (bug 1021033)
Let's be nice and provide a default like Django's project template does
Merge pull request #2228 from twiss/manifest-cors

Allow CORS requests for mini manifests (bug 994423)
Added python packages for things that were in vendor
Merge pull request #2152 from twiss/update-landfill-urls

Update landfill urls
requirements: newrelic 2.16.0.12 -> 2.20.1.18
Merge pull request #2233 from oremj/bump-newrelic

newrelic 2.16.0.12 -> 2.20.1.18
Clean up the Boku form when there are errors (bug 1013434)