* we calculate image fees during item creation and update now
* function imageFees returns queries which deduct fees from user and mark images as paid + fees
* queries need to be run inside same transaction as item creation/update
* removed upfront fees
* removed images provider since we no longer need to keep track of unsubmitted images on the client
* removed User.images resolver
* removed deleteImage mutation
* use Github style upload where it shows ![Uploading <filename>...]() first and then replaces that with  after successful upload
