Added more projects into default conf

* Implemented automatic retrieval of projects from github
* Add project sources from openstack, openstack-dev, openstack-infra and stackforge
* Default data can be loaded from URI
* Refactored user processing in record processor
* Added support for dummy RCS

Implements blueprint add-more-projects

Change-Id: Ifacebaf833688cc19ed739a08a9324597a9d5f40