- Delete Image field and set `website_image` as form's image field for uploads
- Remove instances of `image` field access via Website Item
- Item -> Web Item via Desk: Map Item's `image` to Web Item's `website_image`
- Item -> Web Item via patch: `website_image` will be mapped with thumbnail
- Remove magic that auto-sets `website_image` from `image` in Website Item
(cherry picked from commit 9541354ec7)
# Conflicts:
# erpnext/e_commerce/doctype/website_item/website_item.py
b393c230bd