Removing console chatter
Switching study-update call to use PUT (vs POST)
More API methods, changes to reflect  CORS support
Cleanup of unneeded URLs in study-creation page
Working UI for supporting files (client only)

This fakes addition of files, needs corresponding API methods on the server side to add and upload.
Merge pull request #133 from OpenTreeOfLife/simple-curation-app

Basic UI and annotation for supporting files, RESTful method calls to OTOL API