Deconflict header IDs for Kaleo user KB articles.
Set failonerror to true for number header java tasks and site's article-to-html task.
Merge pull request #997 from jhinkey/deconflict-kaleo-use-portal

Deconflict header IDs for Kaleo user KB articles.
Merge pull request #998 from jhinkey/build-targets-to-fail-on-error

Failonerror to true for number header and site's article-to-html java tasks