place the uploaded file in a desired location on the server  along with the desired fileName retrieved from PART header

Signed-off-by: Dearshor Xue <dearshor@gmail.com>
fixed method parm of @RequestMapping on processUpload2 method in FileUploadController class
Implemented rendering uploaded image file
Added TODOs.txt to record TODO list.
Implemented deleting uploaded image, use @RequestParam instead of @PathVariable for truncated param value  , and misc fixups
Update jackson version to 1.9.12