Update flow-bin or use version of package.json

[Benedikt Hopfinger]

With the flow-binupdate to 0.53 much of the react-stuff has changed and thus when using a newer version of flow-bin in the main package (which is required for flow-typedto work) this leads to consistency issues, as a sagui testwill yield errors when the main flow-bindoes not.
So either use the locally installed version of the main-package or "just" update the one used by sagui.