Batch image download

• Users can add images to a batch-download cart from the Lantern search results view, then download a zip archive of the contents of their cart. From the user's welcome screen, a history of batch downloads is displayed and each previous download can be initiated again.
• Fine tuning to the editability of the cart and the details that can be viewed about previous batch downloads would be a welcome addition.

Related image thumbnail previews

• Adds the ability to click on related image thumbnails in the list view of Lantern search results and view an enlarged preview.
• Removes the Lantern control panel and makes other preparations for the addition of batch image downloads.