Better error reporting when empty results are returned.
Better error reporting when empty results are returned.
Merge branch 'master' of github.com:maths/moodle-qtype_stack
Merge branch 'master' of github.com:maths/moodle-qtype_stack
Merge branch 'master' of github.com:maths/moodle-qtype_stack
Merge branch 'master' of github.com:maths/moodle-qtype_stack
Merge branch 'master' of github.com:maths/moodle-qtype_stack
Better reporting of CAS connection problems.
Merge branch 'master' of github.com:maths/moodle-qtype_stack
Better reporting of CAS connection problems
Merge branch 'master' of github.com:maths/moodle-qtype_stack
Help people find the add node button.
Code clean-up.
Fix docs site map sorting.

Without this, Authoring quick start came after Authoring quick start 3,
since we were sorting by filename, not title.
Make the input and answer tests available to everyone via the docs.
Change docs so examples copy and paste better.

The key thing is that the maths in the example question text stays as
source, and is not rendered. We had been achieving that by using <pre>
tags, but they got copied into the Moodle HTML editor, which made the
question ugly. Here, I change the examples to be in a textarea, which
seems to work better.
Add further textareas to the docs.
Better support for MaximaPool with optimised maxima on the same server.
Merge branch 'master' of github.com:maths/moodle-qtype_stack