include metacat context in the redirect after successful harvester registration login. https://projects.ecoinformatics.org/ecoinfo/issues/6936
Use the "order by" to preserve the nodes order in the replication policy.
Use the ServiceFailure to replace the InvalidRequest when it is the read-only mode (CN throws the exception).
In the replicate method, the checking of the read-only mode was moved from MNodeService class to the MNResourceHandler class since it is asynchronized.
The systemmetadataChanged method is asynchronized, so we put the read-only checking on the ResourceHandler class.
Add the code to check if the mn is on the read-only mode.
Add the code to check if the metacat is in the read-only mode.
Add the code to handle the read-only mode.
Add a class to determine if the metacat is in the readonly mode.
Add the check that only the administrator can shrink the connection pool.
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