ueditor图片自适应

1.图片上传大小限制：                                                                                                                                                              ueditor下config.json:修改imageMaxSize值，默认2M

2.上传图片过大时，不能自适应：                                                                                                                                            ueditor下ueditor.all.js: 添加 img{max-width:100%;}