ZA: single format for members' interest release names and correct dates

Members' interests releases are currently named inconsistently and in a
sometimes confusing manner. This updates the convert script so that
each year follows a single format and corrects release dates for years
where the correct release date is known.
ZA: re-convert members' interests data for import

With changes to the database, members' interests data from 2010-2013
needs to be re-converted using convert_to_import_json.py in order to
allow successful import of the data, while 2014 must be re-converted
so that the new release name format is applied. Includes corrections
for previously unmatched declarations.
ZA: corrections to 2011 members' interests data