Update configs and removed unused dependencies

Signed-off-by: John Molakvoæ (skjnldsv) <skjnldsv@protonmail.com>

webpack.dev.js

@@ -0,0 +1,13 @@
+/** jshint esversion: 6 */
+const merge = require('webpack-merge')
+const common = require('./webpack.common.js')
+
+module.exports = merge(common, {
+	mode: 'development',
+	devServer: {
+		historyApiFallback: true,
+		noInfo: true,
+		overlay: true
+	},
+	devtool: 'source-map'
+})