full-text search using listjs

[ZoeLeBlanc]

Testing out List.js built in search functionality. Try typing in the lessons main page to filter on lesson content (we could also add other fields but figured content made the most sense).

Few notes:

• I added a comment with the fuzzySearch method, so maybe try that method as well. Though I get fewer hits with it than with the search one 🤔
• We could also still use Lunr.js or build our own fuzzySearch method, and then use List.js filtering to keep our current architecture.
• Do we still want keyword in context?

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[mdlincoln]

2020-04-13 we decided to use the lunrjs version instead. Closing this!