Update some copyright dates
Fix some doxygen warnings and a missing return state in an edge case
Add some more status messages, add a required int to hex string function. Tidy up a few minor quirks
Update some comments
Add Rpc_pb2.py to BUILT_SOURCES so it actually gets built automatically.\nWe should perhaps look at toughening up the SimpleRpcControllerTest as it wasn't catching that this wasn't being built.
Update some doxygen
Fix a comment
Merge pull request #389 from peternewman/trivial-fixes

Add some more status messages, add a required int to hex string function and a few other minor tidy ups.