message: fix(aio): do not log messages in production
  In dev mode, all messages passed to `Logger` will be logged.
  In production mode, only warnings and errors will be logged.
  Fixes
diff: import { Injectable } from '@angular/core';
  +import { environment } from '../../environments/environment';
  +
  @Injectable()
  export class Logger {
  log(value: any, ...rest) {
  + if (!environment.production) {
  console.log(value, ...rest);
  }
  + }
  error(value: any, ...rest) {
  console.error(value, ...rest);
  