Comment 4 for bug 414035

Matthew (or other committers), can I please get a review of this change as it is rather large. I have removed:
 - the entire programming directory,
 - the reference to the programming section from advanced-topics,
 - the listing in libs/shipped-docs,
 - references in scripts/fix-urls.sh
I did not touch the broken-translations file which has a mention of it.

If approved, I will commit this change. Thanks.