Reworked note search query, owner username search
Added comment searching

To test: does this duplicate results if there's more than 1 comment?
A precaution against duplicate search results
Forgot to select a newly required column
Fixing the search joins in note search query
Unnecessary filter in query (to be tested)
Merge pull request #2 from ARISGames/full-search

Search all of note content, author username, and comment text