feat: CLS - preconnect to Google Fonts earlier

Also, allow disabling Isotope on a specifc page, such as home

wowchemy/layouts/partials/site_head.html

@@ -1,3 +1,4 @@
+{{ $scr := .Scratch }}
 <head>
   <meta charset="utf-8" />
   <meta name="viewport" content="width=device-width, initial-scale=1" />
@@ -46,8 +47,6 @@
     <meta name="msvalidate.01" content="{{ . }}" />
   {{- end -}}
 
-  {{ $scr := .Scratch }}
-
   {{/* Attempt to load superuser. */}}
   {{ $superuser_name := "" }}
   {{ $superuser_username := "" }}