old_contents: exports = module.exports = {
      environment: 'production',
      programStorageDirectory: 'tmp',
      hedgehogConnection: 'tcp://127.0.0.1:10789',
      process: {
          temporaryStorageDirectory: 'tmp_proc',
          pythonPath: 'python3',
      },
      connection: {
          port: 8000,
          host: 'localhost'
      },
      logging: {
          level: 'debug'
      }
  };
  
new_contents: exports = module.exports = {
      // 'production' will serve the webpack client package
      // 'debug' uses SystemJS
      environment: 'production',
  
      // Path where the programs will be storage
      programStorageDirectory: 'tmp',
  
      // ZMQ connection string for Hedgehog server
      hedgehogConnection: 'tcp://127.0.0.1:10789',
  
      // Process execution configuration
      process: {
          // Directory for temporary process stream capturing files
          temporaryStorageDirectory: 'tmp_proc',
  
          // Path to python interpreter
          pythonPath: 'python3',
      },
  
      // Server connection definition for the backend
      connection: {
          port: 8000,
          host: 'localhost'
      },
  
      // Logging configuration
      logging: {
          level: 'debug'
      }
  };
  
subject: add comments for example config