convert website from hugo to gatsby (#1369)

website/data/notifications.yml

@@ -0,0 +1,22 @@
+notifications:
+- loud: true
+  message: >-
+    Register to join us online for our next community dev meeting, every other
+    Wednesday at 9am-10am PT!
+  published: false
+  title: Netlify CMS Development Planning Sessions Promo
+  url: >-
+    https://www.eventbrite.com/e/netlify-cms-planning-session-bi-weekly-tickets-35794058994
+- loud: true
+  message: >-
+    We have a community on Gitter - join now to ask questions and discuss the
+    project with other devs!
+  published: false
+  title: Gitter shoutout
+  url: 'https://gitter.im/netlify/netlifycms'
+- loud: true
+  message: >-
+    Netlify CMS now supports GitLab!
+  published: true
+  title: GitLab announcement
+  url: '/blog/2018/06/netlify-cms-now-supports-gitlab-as-a-backend/'