Fixed a bug the text filed in path xml query maybe splited.
Fixed a bug if a document already has index, but now metacat doesn't use index. If you try to delete this one, will cause error.
Clean up some code.
Revise the handle query and squery method, not finished yet.
Add a new transform method.
Add a new transferm method for string reader.
Implement harvester scheduing capabilities and sending email reports to the Harvester Administrator
Validate user input data in registration servlet
Improve authorization logic for single file uload servlet
Add delete capability to single file upload servlet
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