restore composer.json, add mysqli extension

public/vendor/editor/karma.debug.conf.js

@@ -0,0 +1,36 @@
+var webpackConfig = require('./config/webpack.config.dev.js');
+
+module.exports = function (config) {
+  config.set({
+    frameworks: ['mocha'],
+    colors: true,
+    logLevel: config.LOG_INFO,
+
+    browsers: ['ChromeDebug'],
+    customLaunchers: {
+      ChromeDebug: {
+        base: "Chrome",
+        flags: ["--remote-debugging-port=9333"]
+      }
+    },
+
+    files: [
+      'node_modules/jquery/dist/jquery.js',
+      { pattern: 'src/js/**/*.js' },
+      { pattern: 'test/**/*.spec.js' }
+    ],
+
+    preprocessors: {
+      'src/js/**/*.js': ['webpack', ],
+      'test/**/*.spec.js': ['webpack', ],
+    },
+
+    webpack: webpackConfig,
+    webpackMiddleware: {
+      stats: 'errors-only',
+    },
+
+    reporters: ['dots'],
+    browserNoActivityTimeout: 60000,
+  });
+};