Initial xml manifest for data upload file
Move DataUploadServlet to package ...server.upload
Add Apache Commons FileUpload source to project

Useful for code completion in Eclipse
Data file upload improvements

* Use XSD to validate the upload file manifest
* Add method for validating upload file version (not implemented yet)
* Only admin can access the upload servlets
* The unpacking is done by task queues
* The files are prefixed in the datastore
Fix classpath setup, move .jar sources to lib/sources
Correct classpath location for commons codec
Put all unpacking in DataUnpack servlet, improve verification

There are a few verification methods that are called but not yet
implemented. They need to be written to verify that no invalid content
is uploaded.

After reading the zip file it is deleted from the datastore.
Fix retrial bug and error handling
Add apache commons io library
Make admin into a gwt servlet. Rename all gwt modules.
Fix minor grammatical and line-order issues
Add a line of comment to web.xml
Fix jdoconfig xsi schema source
MVP Admin Servlet with Channel API server communication
Clean up gwt module xml files
Add serialization of messages sent via server channel
Restructure admin upload/unpack
Improvements of unpacker. Problems found, bad code state
Use BlobStore instead of DataStore for files
Add unit test for UploadBlobManager