* Implement click-to-open for babel syntax errors in build error overlay

* Add click-to-open support for lint errors and refactor parser

* Reactor code to reuse open-in-editor functionality in both build and runtime error overlays

* Fix some eslint warnings

* Add a comment about keeping middleware and dev client in sync

* Remove es6 features from webpack dev client

* Make open-in-editor functionality to work with new iframe script

* Rename `openInEditor` to `editorHandler`
 -  Remove indirection of openInEditorListener
 -  Check editorHandler for null before styling error clickable

* Fix flow errors

* File headers BSD+Patents -> MIT

* BSD+Patents -> MIT

* Updated react-error-overlay to latest Flow (0.54.0)

* Revert "Updated react-error-overlay to latest Flow (0.54.0)"

This reverts commit 6deaffbd.

* Fixed unit tests.

* Updated code as per code review.

* Fixed code as per code review.

* Updated the code as per review.

* Convert react-error-overlay to React

* Update compile-time error overlay to use react-error-overlay components

 * Refactor react-error-overlay components to container and presentational components.

 * Make the compile-time error overlay a part of react-error-overlay package.

 * Use react-error-overlay as dependency in react-dev-utils to show compile-time errors.

* Run Prettier

* Move the function name fix into StackFrame itself

* Fix clicking on source code snippet to open the code in editor

* Use exact objects + minor style tweak

* Don't linkify frames that don't exist on the disk

* Fix lint

* Consolidate iframe rendering logic

* Remove circular dependency between react-dev-utils and react-error-overlay

* Fix lint

* Fix decoupling of react-dev-utils and react-error-overlay by moving middleware

* Deduplicate identical errors