* Update CSS to JSON converter to generalize the remove-property comment
* Fix navigation not being updated when _clearContent is run
* Add structured content schema for link tags
* Add test links
* Add external-link icon
* Pass Display instance to DisplayContentManager
* Update structured content generation
* Update link styles
* Add support for structured-content data attributes
* Assign dataset properties
* Don't remove data-sc attributes
* Use helper functions
* Update test data