Update varify to leverage varify-data-warehouse

Signed-off-by: Don Naegely <naegelyd@gmail.com>
Merge pull request #353 from cbmi/varify-data-warehouse

Update varify to leverage varify-data-warehouse
Fix model import in raw/sources/views.py

Signed-off-by: Don Naegely <naegelyd@gmail.com>
Merge branch 'master' into vcf_export_dev

Conflicts:
	test_suite.py
	tests/settings.py
	varify/conf/global_settings.py