* 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
* Make function private
* Update comments
* Refactor the content manager that is provided to StructuredContentGenerator in AnkiTemplateRenderer
* Update function to not be async, for API parity