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Delete
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Remove Dataset from replica Set
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    http://localhost:4567/removeDataSet?replicasetID=***&datasetID=***

remove the Dataset from the replicaset but not delete from the storage

return the status of the operation "succeed" or "failure"

Delete Dataset
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    http://localhost:4567/deleteDataSets?datasetID=***

recursively delete the Dataset and you can download again 

return the status of the operation "succeed" or "failure"

Delete the images under a dataset
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    http://localhost:4567/deleteOneDataSet?datasetID=***

Only Delete the images below the dataset 

return the status of the operation "succeed" or "failure"