Remove DAL components

The data-access layer components is out of scope for the core since it
is a use case of the resulting graph rather than contributing to it's
formation.

Signed-off-by: Byron Ruth <b@devel.io>
Implement CSV resource converter

See https://github.com/cbmi/origins/wiki/CSV-Resource-Specification

Signed-off-by: Byron Ruth <b@devel.io>