[dev-branch] Batch data ingestion not working when Verify Image Links checkbox is checked

[ljwalker]

Import interface page: /portal/collections/admin/specuploadmap.php

Page displayed during active data import: /portal/collections/admin/specuploadprocessor.php

[ljwalker]

Related: "Verify image links" should become "Verify media links"

[ljwalker]

Issue found when accessing these pages via the Full Text File and Skeletal Data Uploader tools

[egbot]

This option should maybe be removed altogether. There is a lot of overhead involved in this operation (significantly slows down import), thus it might only check the first 10 images, if I'm remembering correctly. We might just want to trust that importer knows whether the links are correct or not, and improve ability to check image links later. After all, images can and do break after import.