Revised Ch2 of Contributors Guide: Producing User Guides

I have revised portions of this chapter to match changes in LO v4.1.
One section is incomplete (I have left a note), but I wanted to get
the other revisions to you without delay.

http://www.odfauthors.org/libreoffice/english/resources-for-contributers/producing-libreoffice-user-guides/view

https://wiki.documentfoundation.org/Documentation/Development#Contributors_Guide

I have good intentions about updating other chapters and writing
missing chapters. With no travel plans for the rest of this year
(beyond the occasional weekend), I might even get around to doing it.
:wink:

--Jean
Team Leader, LibreOffice Documentation