Added JAXRS mapper for general exceptions
Polish and logs
Merge branch 'crystal' of https://github.com/lev-kuznetsov/mev.git into crystal
G+ domain serialization with tests. Testing the module is made difficult
by google's liberal use of the final keyword in the library code, it
does not seem to be possible to mock drive operations and any testing
would have to be done live. For that to work I would need to figure out
how a headless client would be able to authorize itself.