add some comment for the mapping issue
map identifier not to source_identifier
validate with pod schema before import dataset
leftover issue with source_identifier
prevent resource elements getting into extras
better validation error log
bring source_hash back for update count  purpose
try different encode when load json
remove BOM when load json
iterate all validation errors
allow file format pattern e.g. application/vnd.ms-excel
new pod schema validation json
move maintainer out of extras
keep original format in mimetype
modified go to extras->modified
new pod schema validation json
add harvest_source_id and harvest_object_id to dataset extras
harvest_source_id is resposible for harvest job clear issue
add source_datajson_identifier to identify datajson
use both accessURL and webService
add webService into SKIP list