Fixed many errors with the closed captions
Added skeleton CSS and plugin for responsive overlays.
Merge pull request #3328 from LaurentGoderre/multimedia-captions

Fixed many errors with the closed captions
Merge pull request #3324 from thomasgohard/plugin-responsive-overlays

Added skeleton CSS and plugin for responsive overlays
Moved the i18n function to vapour.js to avoid duplication
Merge pull request #3323 from LaurentGoderre/remove-i18n-duplication

Moved the i18n function to vapour.js to avoid duplication