Added FileUploadHandler code stubs, TODO: plug in the actual handler code
File upload handler functional (v1.0) - lots of clean up or chunked/partial support to add...
Fixed png thumbnails to be png (untested, but aiming to keep transparency)
Added .json format extension for binary and image collections
Removed resource tracking from local requests - those falsely report group's usage the development machine usages...
Cleaned up legacy developer storage handler (obsolete), added ph for AdminGroupID setting
Implemented Admin-structure for moving DataPatcher and alike admin commands to web ui.