Added MarkTheWords as a library option in Course Presentation elements.
Added go to slide linking for elements.
Added support for more content types to be displayed as buttons.
Added dragText as a cp option.
Merge branch 'markTheWords' of github.com:h5p/h5p-course-presentation into markTheWords
Merge branch 'master' into markTheWords
Merge branch 'markTheWords'
Made it easier to add elements that are not separate H5P libraries.
Added internal go-to-slide element. Making it easy to jump between slides.
Cleaned up order in semantics, making required element options come first.
Changed button size for a more natural look.
Added close popup to popup overlay.
Merge branch 'more-buttons' of github.com:h5p/h5p-course-presentation into more-buttons
Merge branch 'master' into more-buttons
Merge branch 'more-buttons'
Avoid error when going to non-existing slides.
Merge branch 'go-to-slide' of github.com:h5p/h5p-course-presentation into go-to-slide
Resolve conflicts
Merge branch 'go-to-slide'
Merge branch 'new-keywords' of github.com:h5p/h5p-course-presentation into new-keywords
Resolve conflicts