166 fix npm dependency issue (#167)

* upgrade to webpack 5 and fix dependencies error

* npm run start:dev works

* mini css extractor plugin not working

* fix minicssextractor plugin

Author: longshuicy

frontend/karma.conf.js

@@ -49,7 +49,8 @@ module.exports = function (config) {
 						test: /\.jsx?$/,
 						exclude: path.resolve("node_modules"),
 						include: path.resolve("src"),
-						loaders: ["isparta-loader"]
+						loaders: ["babel-loader"]
+
 					}
 				]
 			},