Pass through package size for packaged apps (bug 878876)
Use addon data to check if default_locale was set in from_upload (bug 891376)

Also fix existing test: it was relying on 'gb', but it's not a
valid locale.
Fix weird unicode-related bug in tests
Revert "Fix weird unicode-related bug in tests" (this breaks jenkins tests)

This reverts commit ee76b1bef440bff6f2994caa5c40d67882c222df.
Fix repeated messages in file viewer validation results
Fix typo.
Merge pull request #912 from davidbgk/878876-package-size

Pass through package size for packaged apps (bug 878876)
possible caching problem with themelocks, tests (bug 856141)
Fix intermittent test failure test_versions_multiple (bug 896575)
Adds migration for rocketfuel waffle switch (bug 894431)
bump app-validator
use current_version or latest_version for features list in devhub (bug 896692)