[ZA members-interests] Add new raw JSON as provided by Geoff
[ZA members-interests] Correct bad JSON encoding
[ZA members-interests] Corrected bad JSON
[ZA members-interests] fix code typo
[ZA members-interests] Don’t extract category numbering from JSON, use hardcoded values instead.

Newer JSON does not have the numbers in the titles
[ZA members-interests] Regenerate the 2012 importable JSON
[ZA members-interests] Replace old 2012 data with newly provided data (contains better entries)
[ZA members-interests] Create 2010 import JSON (having matched up slugs)
[ZA members-interests] Regenerate 2011 import JSON (data ordering will have changed)
[ZA members-interests] Generate the 2013 import JSON
[ZA members-interests] update import docs to mention new datafiles
[ZA members-interests] Handle duplicated content in JSON by merging