Update the gvSIG Quickstart
The project Quick Start was reviewed by @flicstar as part of the Google Season of Docs in October 2019.
It scored 1 out of possible 4. This document is very long and it seems like there are a few minor differences in the application now that don't match the documentation. It contains lots of really useful information but it is too long to be a digestible Quickstart. It might overwhelm the reader.