[Finishes #82526660] add reference area containing instruction videos to non-Blockly puzzle types (Multi, Match, etc)
Update multi.en.yml
Anna & Elsa share images.
Merge branch 'staging' of github.com:code-dot-org/code-dot-org into staging
Add -p switch to runner.rb for running UI tests in parallel

Usage: `./runner.rb -p 3` will run UI tests 3 at a time.
Don't chef-client on staging yet.
Cookbook updates.
Merge branch 'staging' of github.com:code-dot-org/code-dot-org into staging
Remove aws/ generation of stuff chef does now.
Make locale resolution order deterministic.
Merge branch 'test' of github.com:code-dot-org/code-dot-org into staging
Ignores
Move solr_server to bin (from aws)
Install crontabs.
Apply profile and bashrc using chef.
Fix newrelic system monitor so that it properly associates hosts with applications.
Merge pull request #446 from code-dot-org/productionFix

404 on shared anna/elsa levels
Block new levels in varnish for now.
Merge branch 'production' of github.com:code-dot-org/code-dot-org into test
Merge branch 'test' of github.com:code-dot-org/code-dot-org into staging