http://work.netxforge.com/issues/330
allow setting of explicity RAG status. 
Operator and RFSService summary, have RAG for sub components.
http://work.netxforge.com/issues/330

Unified Context in the Interpreter and in Monitoring, now called
ComputationContext and part of .common. Created a CompositeSummary, 
which simply bundles multiple summaries.
http://work.netxforge.com/issues/330
Composite summary update.