Redirect to play page for non-existent levels. Fixes issue #396
Tweaked sprite scripts to use given response buttons even if the script is not skippable.
Modified locale messages for "level_load_error"
Used internationalised strings for level not found message
Moved internationalisation of level load error message into template file
Merge pull request #422 from yangshun/level-not-found

Redirect to play page for non-existent levels. Fixes issue #396
Trying to get session code merging to work again.
Added a screen for when playback ends.
Merge branch 'master' of https://github.com/codecombat/codecombat
Fixed simulator

The format of something must have suddenly changed?
Improved match scheduling
Implemented espionage mode