Added lazy-loading to release tile posters.

config/default.js

@@ -168,6 +168,8 @@ module.exports = {
         path: './media',
         thumbnailSize: 320, // width for 16:9 will be exactly 576px
         thumbnailQuality: 100,
+        lazySize: 90,
+        lazyQuality: 90,
         videoQuality: [480, 360, 320, 540, 720, 1080, 2160, 270, 240, 180],
         limit: 25, // max number of photos per release
     },