Merge pull request #326 from codecombat/master

Merging master into production
Merge branch 'master' into production
Merge branch 'master' into production
Merge branch 'master' into production
Merge pull request #359 from codecombat/master

Merge master into production
Merge pull request #363 from codecombat/master

Merge master into production
Merge pull request #366 from codecombat/master

Merge master into production
Merge pull request #367 from codecombat/master

Manually specified tv4 version to fix npm checksum error
Merge branch 'master' into production
Merge branch 'master' into production
Merge branch 'master' into production
Merge branch 'master' into production
Merge pull request #386 from codecombat/master

Merge master into production
first step of translation

just trying the environment for translation
Update names.coffee
Fixed the level session schema submitDate property.
Fixed the matches order on the ladder team page.
Added a log for figuring out what session is causing NaNs.
Changing the files view to replace files when there are name collisions.
Fixed modals not being able to be opened after restarting the level when no scripts are running.