add make test and Remove vue-cli serve

lib/service/metadata/comment.ex

@@ -4,13 +4,6 @@ defimpl Mobilizon.Service.Metadata, for: Mobilizon.Events.Comment do
   alias Mobilizon.Events.Comment
 
   def build_tags(%Comment{} = comment) do
-    comment
-    |> do_build_tags()
-    |> Enum.map(&HTML.safe_to_string/1)
-    |> Enum.reduce("", fn tag, acc -> acc <> tag end)
-  end
-
-  defp do_build_tags(%Comment{} = comment) do
     [
       Tag.tag(:meta, property: "og:title", content: comment.actor.preferred_username),
       Tag.tag(:meta, property: "og:url", content: comment.url),