Added more complete support for materials. Implemented methods for the
graph database to persisted the client side objects to the dababase. Add
support for Lucene indexes and implemented at REST call for search of
materials. Need to document all this once the API is complete.
Added CanonicalFeatureDB
Merge branch 'master' of https://github.com/phoenix6/matIn.git
Removed reference to Material object in RequestGenerator. We can
probably remove this class entirely since I have handled this code in
MatINWriteable object.