Allow tabbing through tutorial steps

[dobromir-hristov]

Bug/issue #, if applicable: 50959680

Summary

Allows tabbing through the tutorial sections.

Dependencies

NA

Testing

Steps:

1. Open a tutorial page, like http://localhost:8080/tutorials/slothcreator/creating-custom-sloths
2. Assert you can start tabbing and it will tab through each tutorial item

Checklist

Make sure you check off the following items. If they cannot be completed, provide a reason.

• Added tests
• Ran npm test, and it succeeded
• Updated documentation if necessary