client/server: re-add removed config test line, remove unnecessary import

client/pages/index.tsx

@@ -1,5 +1,4 @@
 import styles from '@styles/Home.module.css'
-import Header from '@components/header'
 import PageSeo from '@components/page-seo'
 import HomeComponent from '@components/home'
 import { Page, Text } from '@geist-ui/core'

server/src/lib/__tests__/config.ts

@@ -13,6 +13,7 @@ describe("Config", () => {
 		expect(result).toHaveProperty("enable_admin")
 		expect(result).toHaveProperty("secret_key")
 		expect(result).toHaveProperty("registration_password")
+		expect(result).toHaveProperty("welcome_content")
 		expect(result).toHaveProperty("welcome_title")
 	})