Google Spreadsheets worksheet by title cleanup/refactor #6409
Description
In #5334 , I left a few comments about future work on the "fetch worksheet by title" functionality for the google spreadsheets query runner. We should address those, namely:
- don't use mixed-type variables
- allow for non-quoted worksheet titles (single word)
- verify 0/1 indexing of worksheet numbers, and add comment if it differs