Use external link policy for icon URLs

layouts/_default/_markup/render-link.html

@@ -1,9 +1,3 @@
-{{ $external := false }}
+{{ $target := partial "paige/target.html" (dict "page" .Page "url" .Destination) }}
 
-{{ if (urls.Parse .Destination).IsAbs }}
-    {{ $external = not (strings.HasSuffix .Destination site.BaseURL) }}
-{{ end }}
-
-{{ $newtab := and $external site.Params.paige.external_link_new_tab }}
-
-<a {{ with .Destination }} href="{{ . }}" {{ end }} {{ if $newtab }} target="_blank" {{ end }} {{ with .Title }} title="{{ . }}" {{ end }}>{{ .Text }}</a>
+<a {{ with .Destination }} href="{{ . }}" {{ end }} {{ with $target }} target="{{ . }}" {{ end }} {{ with .Title }} title="{{ . }}" {{ end }}>{{ .Text }}</a>