basic server code to resize images and create default thumbnail
the app basics are complete. User can now drag images onto the webpage, the server will resize them and create a thumbnail one by one.

the imageModule is now in place to handle each image on the page, and the user may add more images after the first upload.

TODO:
  Add a way to remove images to the page
  Add UI controls to edit thumbnails / crop photos etc.

  Blob Files? May not be necessary...