fixed labels and dates
made tree number a node
added nodes for semantic types
shortened file parameters
added parent tree node to descriptors
added the proper label to the tree node
replaced the file downloading function
reimport; required for sgd
Merge pull request #383 from micheldumontier/release3

updates
fixed bug where output file being rewritten
fixed bug in parsing overall status
Merge pull request #384 from micheldumontier/release3

clinicaltrials: fixed bug in parsing overall status
Merge branch 'release3' of github.com:bio2rdf/bio2rdf-scripts into clinicaltrials