fix(www-website): fix link to community, fix CMS previews (#3189)

website/gatsby-config.js

@@ -39,6 +39,18 @@ module.exports = {
     },
   },
   plugins: [
+    {
+      resolve: 'gatsby-plugin-manifest',
+      options: {
+        name: 'NetlifyCMS',
+        short_name: 'NetlifyCMS',
+        start_url: '/',
+        background_color: '#ffffff',
+        theme_color: '#ffffff',
+        display: 'standalone',
+        icon: 'static/img/favicon/icon-512x512.png',
+      },
+    },
     {
       resolve: 'gatsby-source-filesystem',
       options: {
@@ -59,6 +71,13 @@ module.exports = {
         // prettier-ignore
         plugins: [
           'gatsby-remark-autolink-headers',
+          {
+            resolve: "gatsby-remark-external-links",
+            options: {
+              target: "_blank",
+              rel: "noopener noreferrer"
+            }
+          },
           {
             resolve: 'gatsby-remark-prismjs',
             options: {
@@ -79,17 +98,5 @@ module.exports = {
         modulePath: `${__dirname}/src/cms/cms.js`,
       },
     },
-    {
-      resolve: 'gatsby-plugin-manifest',
-      options: {
-        name: 'NetlifyCMS',
-        short_name: 'NetlifyCMS',
-        start_url: '/',
-        background_color: '#ffffff',
-        theme_color: '#ffffff',
-        display: 'standalone',
-        icon: 'static/img/favicon/icon-512x512.png',
-      },
-    },
   ],
 };