Ping Hazel: GS5.1 Chapter 5 Calc ready for editing

I have accepted and edited OH's updates; replaced figures as needed;
other edits and updates, including in the section on inserting columns
and rows (there are more choices on the right-click context menu now).

http://www.odfauthors.org/libreoffice/english/getting-started/feedback-lo-5.1/gs5-1-ch5-calc/view

Hazel, I think this chapter would benefit from your editing if you
have time. Thanks!

--Jean