AIUX - Mobile Module

Made a few small updates to the AIUX progress indicators from the previous shots. Thanks to Nilesh for the suggestion.

- Check + Grey Title: Completed Lesson
- Orange Dot: Active Lesson
- Light Grey Dot: Future Lesson

I originally designed a locked state, where the future lessons couldn't be viewed until completion of the previous lesson, but soon decided that if someone really wanted to skip ahead, they should be able to. So I killed "locked" lessons and instead will just have a message near the complete button that serves as a mild warning.

Are the three states above clear to you?

Full size attached