✨ Add screen size popover in edit mode

public/locales/en/layout/screen-sizes.json

@@ -0,0 +1,11 @@
+{
+  "popover": {
+    "title": "Configuring for screen size \"{{size}}\"",
+    "description": "You are editing the size for your current screen"
+  },
+  "sizes": {
+    "small": "small",
+    "medium": "medium",
+    "large": "large"
+  }
+}