push changes for all basics notebooks to dev

[katrinaager]

All changes/edits have been made to the basics section notebooks. Once these are approved by Cater, they should be able to be pushed from katrina to dev.

[katrinaager]

#228

[katrinaager]

All visualization notebooks have been updated with Carter's suggestions. All changes have been committed to review_visualization. Waiting for approval from @rcpeene