fixup! Implements GET for images

main.go

@@ -221,6 +221,7 @@ func (a *appData) cacheAlbumDescription(getAlbum <-chan *Album, toIndex chan<- *
 		albumCache, err := a.db.Get(album.ID)
 
 		if err == nil {
+			a.cover.RegisterCover(albumCache.ID, albumCache.CoverURL)
 			toIndex <- albumCache
 			continue
 		}
@@ -235,6 +236,7 @@ func (a *appData) cacheAlbumDescription(getAlbum <-chan *Album, toIndex chan<- *
 			a.errors <- fmt.Errorf("[CACHE ALBUMS]: storing %s: %s", album, err)
 			continue
 		}
+		a.cover.RegisterCover(album.ID, album.CoverURL)
 		toIndex <- album
 	}
 	log.Printf("[CACHE ALBUMS] %d albums cached", nbAlbums)