Added sharpness and re-added entropy to avatars, ignoring low-entropy photos as main avatar and in profile photo list.

migrations/20190325001339_releases.js

@@ -35,6 +35,7 @@ exports.up = knex => Promise.resolve()
 		table.integer('width', 6);
 		table.integer('height', 6);
 		table.float('entropy');
+		table.float('sharpness');
 
 		table.text('scraper', 32);
 		table.text('credit', 100);