Monorepo structure, remove Gulp, new build process (#2116)

preview/pages/_data/alerts.json

@@ -0,0 +1,26 @@
+[
+  {
+    "color": "success",
+    "icon": "check",
+    "text": "Wow! Everything worked!",
+    "description": "Your account has been saved!"
+  },
+  {
+    "color": "info",
+    "icon": "info-circle",
+    "text": "Did you know?",
+    "description": "Here is something that you might like to know."
+  },
+  {
+    "color": "warning",
+    "icon": "alert-triangle",
+    "text": "Uh oh, something went wrong",
+    "description": "Sorry! There was a problem with your request."
+  },
+  {
+    "color": "danger",
+    "icon": "alert-circle",
+    "text": "I'm so sorry…",
+    "description": "Your account has been deleted and can't be restored."
+  }
+]