set yt thumbnail max size, set hero load order

vue-theme/src/components/featured-image.vue

@@ -1,8 +1,8 @@
 <template lang="pug">
 .featured-or-hero-image
     img(v-if="hero && hero.url" :src="getThumbnailFromYt(hero.url)" alt="post thumbnail from YouTube")
-    img(v-else-if="featured" :src="featured" alt="post featured")
     img(v-else-if="thumb" :src="thumb" alt="post thumbnail")
+    img(v-else-if="featured" :src="featured" alt="post featured")
     
     //- Errors
     p(v-else-if="hero && !hero.url") ERROR: hero url undefined
@@ -29,7 +29,7 @@ export default {
     },
     methods: {
         getThumbnailFromYt(url) {
-            return ytThumbnail(url, 'medium')
+            return ytThumbnail(url, 'max')
         }
     }
 }