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
remove legacy AMO cron jobs (bug 1026247)
Merge pull request #2219 from cvan/rm-amo-crons

remove legacy AMO cron jobs (bug 1026247)
remove legacy AMO tasks (bug 1026255)
Merge pull request #2220 from cvan/rm-amo-tasks

remove legacy AMO tasks (bug 1026255)
remove AMO templates (bug 1026119)
Merge pull request #2216 from cvan/rm-impala

remove AMO templates (bug 1026119)
Remove unneeded, outdated platforms and applications code (bug 1022830)
Merge pull request #2213 from diox/cleanup-applications-constants

Remove unneeded, outdated platforms and applications code (bug 1022830)
Remove another stray reference to request.APP (bug 1022830)
Rename ADDON_ICON_SIZES and only generate the ones we need (bug 885329)

(we should probably deprecate 32x32 and 48x48 as well, but that's
 for another bug)
Add back missing extrahead block in base.html (bug 1026119)

This unbreaks the ecosystem landing page and various other
pages depending on this block.
import cleanup
I guess we were using these for imports
Fix XSS through string interpolation (bug 1023594)
prevent cookie-based authentication for the API (bug 987932)