[pgAdmin4][Patch]: Use standalone modules prop-types as React.PropTypes has moved into a different package since React v15.5

[Surinder Kumar]

Hi

While looking into a React bug, I tried running pgAdmin4 code with
Reactv15.5 or with Reactv16-RC-3, the code fails to run.
Because React's PropTypes is no more part of React Module. Reference link
<https://github.com/facebook/react/blob/master/CHANGELOG.md#user-content-1550-april-7-2017>
.

Please find an attached patch.

Thanks,
Surinder

fix_react_proptypes_deprecated.patch
Description: Binary data