fix broken homepage

Author: deldesir

youtube2zim/scraper.py

@@ -506,6 +506,8 @@ def extract_videos_list(self):
             self.playlists[0].videos = all_videos
             self.playlists[0].videos_count = len(all_videos)
             self.playlists = self.playlists[:1]
+            for i, p in enumerate(self.playlists):
+                p.position = i
 
             playlist_json = {
                 "playlist_id": self.playlists[0].playlist_id,