Performance increase and ease cp integration.
Revert "Performance increase and ease cp integration."

This reverts commit c5cdd988c23465958f03aa5c7600b9af0365c131.
Whitespace.
Changed engine internals to increase performance and ease integration with CP.
Use correct variables.
Merge branch 'go-to-slide' of github.com:h5p/h5p-continuous-text into go-to-slide
Merge branch 'go-to-slide'