1) LERGO 177 improvments

2) Footer - remove Trans Diff, and for now remove link from "blog"; make
more room for embedded Google forms in the pages: Contribute, Send
Feedback, Suggest Lesson, Report Problem 
3)  Lesson Report -   Add next/prior lesson recommendation to lesson
report (left over from JIRA 170)
4) Play Quiz -  JIRA 196: Play Quiz - 2 comments - re progress bar and
edit to "Select an Answer"