fix #448 - Download and parse tables in TOC

See merge request !1

Fix #448: missing datasets - download and parse TOC's leaf elements of type 'table' too (not only 'datasets')

Don't check for Git context when --datasets option is passed to the script

See merge request !2

Bruno Duyé authored 5 years ago and Bruno Duyé committed 5 years ago

Fix #435: ignore "International trade in goods - detailed data" datasets (they doesn't contains any data)

sometimes <nt:lastUpdate> is not updated (e.g. gov_10a_taxag)