Added demo GlAccount and OrgInternal data, some GL and Party entity cleanups too
Implemented initial accounting transaction posting service
More progress on posting services and period closing
Split auto post services into invoice, payment, inventory, and other files
Removed extraneous text
Updated README for terms more consistent with moqui.org and such
Added GlAccount mapping demo data including some chart of accounts cleanup to support item types; also added PartyAcctgPreference demo data and some model cleanup
Merge remote-tracking branch 'upstream/master'