* MessageBox: Add attribute 'showClose' to doc

Add an attribute 'showClose' to explain whether to show 'close' button on the right top.

MessageBox: 文档中添加一个属性：showClose。 用来解释是否显示 MessageBox 右上角的关闭按钮。改属性，已经在源码中声明。

* MessageBox: Add attribute 'showClose' to doc

Add an attribute 'showClose' to explain whether to show 'close' button on the right top.

* Added clearable to el-input.

* Added en-US example.

* Also fire change event on clear.

* Used clearable shorthand; added clearable to attribute list.

* Added styles.

* feat: update autocomplete

* Feat: update input doc

* fix pagination jumper value

* fix lint

1.no init data
2.click start time and comfirm
3.click end time and comfirm(the end time is not change)
4.error
reason:
not evaluate 'maxDate' value in step1
I will show more details in conversation

* Tag关闭按钮@click修改为@click.stop防止事件冒泡（Tag添加自定义事件时，点击关闭会触发两次事件）

* Button: fix closeEvent bug
Tag关闭按钮@click修改为@click.stop防止事件冒泡（Tag添加自定义事件时，点击关闭会触发两次事件）

Create a Lithuanian translation.

...

Added the Spanish translation after the English one.

Added llinks to Issue reporter, Element UI main website and Vuejs website for clarity.

First version of this translation

* Complete Dutch Translation

* Update nl.js

* dropdown 组件 新增触发下拉框显示隐藏时， 触发visible事件，传递当前下拉框显示状态

* Dropdown 修改事件名称，新增文档

* Dropdown 统一事件名称，修改文档

* Dropdown 统一事件名称，修改文档

* 完善form表单prop字段介绍

* Repair of multiple height calculation bug