Metacat

Add a junit test case to test the write/read of new fields in the system metadata.

Add the test suite.

Add the code to test scenario that a user tries to update an archived object.

Fixed an null pointer issue in this class.

Add more scenario for check isAuthorized.

Get the node id from the metacat.properties instead of the hard coded one.

Remove the obsoleted test class.

Removed the obsoleted test class.

Now for the untrusted certificate, the client throws an exception rather than returning null.

Add a initial test.