[Enhancement] Misc fixes 2024-03-29 (#150)

* Removes header to allow embedding in frame

* Escaped links in podcast RSS builder

* Turned homepage sections into clickable links

* Enabled live dashboard in all ENVs

* Ensured download worker always returns a 2-member tuple

lib/pinchflat/downloading/media_download_worker.ex

@@ -57,7 +57,9 @@ defmodule Pinchflat.Downloading.MediaDownloadWorker do
         {:ok, updated_media_item}
 
       err ->
-        err
+        Logger.error("Failed to download media for media item #{media_item.id}: #{inspect(err)}")
+
+        {:error, :download_failed}
     end
   end