SWC-648 - java GUI for file upload. initial UI
Added MVP arch, multipart upload and file upload status
added recursive file add and styling
testing
reset stack.properties
changed args for webstart
partial tree work, reverting to flat uploat
added proper delete staged file code, futures factory and a start up single file mode upload (new version)
finished single file upload mode and testing
removed unused models
code review changes
merged in from upstream
Merge pull request #641 from dburdick/swc-648

Swc 648 - Java File uploader