put limit on file mode creations in free plan

src/components/app.jsx

@@ -1351,8 +1351,16 @@ export default class App extends Component {
 		this.setState({ isCreateNewModalOpen: false });
 	}
 	blankFileTemplateSelectHandler() {
-		this.createNewItem(true);
+		itemService.getCountOfFileModeItems().then(count => {
-		this.setState({ isCreateNewModalOpen: false });
+			if (count < 2) {
+				this.createNewItem(true);
+				this.setState({ isCreateNewModalOpen: false });
+			} else {
+				return alert(
+					'"Files mode" is currently in beta and is limited to only 2 creations per user. You have already made 2 creations in Files mode.\n\nNote: You can choose to delete old ones to create new.'
+				);
+			}
+		});
 	}
 
 	templateSelectHandler(template) {

src/itemService.js

@@ -253,5 +253,13 @@ export const itemService = {
 				log(`Item ${itemId} unset for user`, arg);
 			})
 			.catch(error => log(error));
+	},
+
+	async getCountOfFileModeItems() {
+		const items = await this.getAllItems();
+		return items.reduce((count, item) => {
+			if (item.files) return ++count;
+			return count;
+		}, 0);
 	}
 };