new elements: card for user: 'user-edit'; db-connector 'user-editor'

--HG--
rename : 02_SimpleUserDB_Fileupload/polymersailsbonsai/assets/elements/image-upload.coffee => 02_SimpleUserDB_Fileupload/polymersailsbonsai/assets/elements/image-upload/image-upload.coffee
rename : 02_SimpleUserDB_Fileupload/polymersailsbonsai/assets/elements/image-upload.styl => 02_SimpleUserDB_Fileupload/polymersailsbonsai/assets/elements/image-upload/image-upload.styl