Tracking status of work on user guides

Anyone working on user guide chapters, please put your initials and
date in the "Checkout" column in the relevant table on this wiki page:

https://wiki.documentfoundation.org/Documentation/Development/UserGuideTasks

Then when you upload your work to ODFAuthors, remove your initials
from the "Checkout" column and put them (and the date) in whatever
column is relevant to what you've done.

If everyone will do that consistently, it will help everyone. And yes,
I occasionally forget too.

--Jean