Fix for downloading files via API (was yielding 403 because key wasn't included).
Update pom.xml description.
Implement an easier, more flexiable method for upload files to histories (file type defaults to 'auto', db key defaults to '?', can override tool id, can upload multiple files (if tool supports it)).
Fix handling of Galaxy history uploads with custom names and of multiple files.
Add ConfigurationClient interface, implementation, test, etc...