polish up new file and image uploading+example

Eternal upload example — go to http://grouppatternlanguage.org/wagn/Mirroring and click on ADD A MIRROR (right side of card, near top). I went through simpler and simpler cases and got it to work when i was uploading to the image card itself (i.e. not included anywhere). See http://test.dwagn.org/wagn/eternal_image_uploads (gets an Application error i think after spinning for a while). --John