Add creating and basic editing of translation

lib/outlook/internal_tree.ex

@@ -9,9 +9,9 @@ defmodule Outlook.InternalTree do
     |> Html.to_html()
   end
 
-  def render_html_preview(tree) do
+  def render_html_preview(tree, target \\ "1") do
     tree
-    |> Html.to_html_preview("1")
+    |> Html.to_html_preview(target)
   end
 
   require Logger