CC-1714: Add converter to update existing concept_tree.json files
CC-1714: Add converter to update existing concept_tree.json files

Add a converter that will update existing concept_tree.json
files to the new, sorted format.

au-research/ANDS-ResearchVocabularies-Toolkit,au-research/ANDS-Vocabs-Toolkit,au-research/ANDS-Vocabs-Toolkit,au-research/ANDS-ResearchVocabularies-Toolkit,au-research/ANDS-ResearchVocabularies-Toolkit,au-research/ANDS-Vocabs-Toolkit