Tidying up and making book available

[dicook]

This book grew too much and it was way too ambitious to think we could wrangle it all together into something presentable. We could reduce it to primarily the case studies, with only a few of the absolutely necessary chapters.

At least it is compiling again now.

Then it needs to have the web page built automatically, and made available using the Pages tool on the GitHub repo.
The docs folder is now added to the repo, so this is possible.

Should we have an organisation so that all of us can change the settings for the repo??