Metacat

Add the code to check if the serialVersion object is null before it is saved to the db.

Add a flag on the systemMetadataChanged method. If it is true, the authoritative member node will only accepts the serial version and replica list; the replica node accepts everything. If it is false, it will accept everything.

Add a note for the updateSystemMetadata method.

CN.updateSystemMetadata will ignore the serial version and replica list in the comming system metadata from the mn.

Add the code to check the date of system metadata modification match in MN.updateSystemMetadata only. CN.updateSystemMetadata doesn't check.

use request query string first when handling MN.query() method. https://redmine.dataone.org/issues/7384

Commented out the code to check serial version on the updateSystemMetadata method.

Add more debug messages for the isCNAdmin method.

Put a the systemMetadataChanged method into a queue, so it will not hold the block.

Change updateReplicationMetadata() and setReplicationStatus() to no longer set the dateSysmetaModified date per our discussion on 9/16/15.