cleaning missing topics.  Hard problem
fixing bug in looping over children, recovered one missing child.
Merge branch 'coach_reports_error_message' into empty_subtopics_1
add tests for checking that knowledge map elements are on the page (though does not confirm that they are visible.
Merge remote-tracking branch 'upstream/develop' into empty_subtopics_1
Merge branch 'empty_subtopics_1' of git://github.com/bcipolli/ka-lite into bcipolli-empty_subtopics_1

Conflicts:
	kalite/main/tests/__init__.py