add google js to gardens#show

app/views/gardens/show.html.haml

@@ -11,7 +11,6 @@
   = tag("meta", property: "og:site_name", content: ENV['GROWSTUFF_SITE_NAME'])
 
 - content_for :scripts do
-  = javascript_include_tag "charts"
   = javascript_include_tag "https://www.gstatic.com/charts/loader.js"
 
 .row

app/views/layouts/application.html.haml

@@ -1,6 +1,7 @@
 !!! 5
 %html{ lang: "en", prefix: "og: http://ogp.me/ns#" }
   = javascript_include_tag "application"
+  = yield :script
   = render partial: "layouts/meta"
   %body
     = render partial: "layouts/header"