[#134] fix registry url
[#137] turn off parser logs to console

All the logging from the parser are handled by the sqlalchemy
handler and should get logged to the database
Merge pull request #132 from IATI/120-new-filters

Add new filters
fix the xml codepath
Switch xml serializer to yields not string concat
test hacks
Merge branch 'yield' of https://github.com/okfn/iati-datastore

Conflicts:
	iati_datastore/iatilib/frontend/serialize/__init__.py
	iati_datastore/iatilib/model.py