PITHIA-NRF e-science center first release

This deliverable will be the first official release of the PITHIA-NRF e-science center and its corresponding documentation. It will describe the development of the three layers of the architecture (outcomes of tasks 5.3, 5.4 and 5.5), their continuous integration, and the operation of the PITHIA-NRF e-science center and its components on the EGI cloud testbed. The release will be the result of an agile development and continuous integration process where all components will be developed and prototyped in parallel, based on user feedback from the proof of concept implementation.