Only highlight the Factlink when it's completely scrolled in view
Only highlight the Factlink when it's completely scrolled in view

This fixes #54, as it's no longer highlighting Factlinks that are part
inside and part outside the viewport.

Factlink/factlink-core,daukantas/factlink-core,daukantas/factlink-core,daukantas/factlink-core,daukantas/factlink-core,Factlink/factlink-core,Factlink/factlink-core,Factlink/factlink-core