More changes - not finished
remove second Mexico region and account for new region exclusions (bug 914837)
pass zamboni's list of languages to Fireplace (bug 892741)
Notify app developers when their manifest is broken (bug 850830)
Merge pull request #1120 from diox/update_manifest-rereview-email

Notify app developers when their manifest is broken (bug 850830)
Bump django
Bump amo-validator
allow filtering by language in search API
typo in the docs
add in a reason for invalid receipts (bug 756297)
Merge pull request #1124 from andymckay/756297

add in a reason for invalid receipts (bug 756297)
Remove LazyPjaxMiddleware and friends, it was never used (bug 915789)
Refactored AllowAppOwner a bit to remove the reviewer check (bug 915791)

This removes the dependency on a Tastypie authorization class.
Cleaning up AddonPremium model (bug 895937)
fix test_languages_filtering test
Updated migration 653 to account for no data.

This fixes the migration for users coming from landfill data.
Merge pull request #1129 from diox/remove-pjax-middleware

Remove LazyPjaxMiddleware and friends, it was never used (bug 915789)
Strip incoming translations in the API (bug 915656)
Implement collections API filter and fallback system properly (bug 915803)

- Filters no longer automatically include NULL values
- Fallback no longer drops filters, instead replace the corresponding
  value with NULL
Disconnect signals until last save in addon_factory