Figure out "best" image

[siznax]

We get the following images from MediaWiki:API and Wikidata:

Image => Wikidata Property:P18
pageimage => MediaWiki:API (action=query) pageimage
thumbnail => MediaWiki:API (action=query) thumbnail

RESTBase /page/mobile-text also gives us a couple of images:

image => apparently, pageimage (above)
thumb => apparently, scaled (larger) thumbnail (above)

Spot-checking some articles, there were only conflicts with thumbnail, where the RESTBase thumb was the scaled (larger) MediaWiki:API thumbnail.

In the case of Napoleon, the Wikidata Image is a portrait (great!), while the get_query images are an Imperial Coat of Arms (what?).

››› Napoleon (en)

• Image: https://upload.wikimedia.org/wikipedia/commons/b/b5/Jacques-Louis_David_-_The_Emperor_Napoleon_in_His_Study_at_the_Tuileries_-_Google_Art_Project_2.jpg
• images: <dict(5)> {Image, image, pageimage, thumb, thumbnail}
• pageimage: https://upload.wikimedia.org/wikipedia/commons/f/f3/Grandes_Armes_Imp%C3%A9riales_%281804-1815%292.svg
• thumbnail: https://upload.wikimedia.org/wikipedia/commons/thumb/f/f3/Grandes_Armes_Imp%C3%A9riales_%281804-1815%292.svg/882px-Grandes_Armes_Imp%C3%A9riales_%281804-1815%292.svg.png

In the case of Stephen Fry, pageimage seems more current.

››› Stephen Fry (en)

• Image: https://upload.wikimedia.org/wikipedia/commons/1/15/Stephen_Fry_cropped.jpg
• images: <dict(5)> {Image, image, pageimage, thumb, thumbnail}
• pageimage: https://upload.wikimedia.org/wikipedia/commons/3/38/Stephen_Fry_June_2016.jpg
• thumbnail: https://upload.wikimedia.org/wikipedia/commons/3/38/Stephen_Fry_June_2016.jpg

In the case of Ella Fitzgerald, it's hard to say.

››› Ella Fitzgerald (en) {}

• Image: https://upload.wikimedia.org/wikipedia/commons/6/65/Ella_Fitzgerald_1962.JPG
• images: <dict(5)> {Image, image, pageimage, thumb, thumbnail}
• pageimage: https://upload.wikimedia.org/wikipedia/commons/a/a1/Ella_Fitzgerald_(Gottlieb_02871).jpg
• thumbnail: https://upload.wikimedia.org/wikipedia/commons/thumb/a/a1/Ella_Fitzgerald_%28Gottlieb_02871%29.jpg/969px-Ella_Fitzgerald_%28Gottlieb_02871%29.jpg

So, which is the "best" image? I guess it depends on your goal.

[siznax]

A better way to organize these attributes may be...

qimage: MediaWiki:API (action=query) pageimage
qthumb: MediaWiki:API (action=query) thumbnail
rimage: RESTBase (/page/mobile-text/) image
rthumb: RESTBase (/page/mobile-text/) thumb
wimage: Wikidata Property:P18

[siznax]

Mostly fixed with d5577c3: make images: {qimage, qthumb, rimage, rthumb, wimage}