Change type name for identity metadata to make it easier to correlate back to the identity service. nasa/openmctweb#92
nasa/openmctweb#92
Add an aggregator to handle exposing the user's identity, nasa/openmctweb#92
Add general structure for Open MCT Web, including top-level and second-level directory structure. README files are included to explain the role of each directory; markdown is used to allow for richer display when viewer support is present. WTD-519.
