message: fix(Widget): add input debounce to IFrame widget
diff: import * as React from 'react'
  +import * as debounce from 'lodash/debounce'
  import Row from 'antd/lib/row'
  import Col from 'antd/lib/col'
  import Input from 'antd/lib/input'
  @@ -16,8 +17,15 @@ interface IframeSectionProps {
  export class IframeSection extends React.PureComponent<IframeSectionProps, {}> {
  + private debounceInputChange = null
  +
  + constructor (props: IframeSectionProps) {
  + super(props)
  + this.debounceInputChange = debounce(props.onChange, 2000)
  + }
  +
  private inputChange = (prop) => (e: React.ChangeEvent<HTMLInputElement>) => {
  - this.props.onChange(prop, e.target.value)
  + this.debounceInputChange(prop, e.target.value)
  }
  public render () {
  