[Babel] Improve the production build

[oliviertassinari]

Add some plugins for improving the production build.

Name	Build size impact	Description
transform-react-constant-elements	0 kB	Save some memory allocation.
transform-react-inline-elements	-1 kB	Improve runtime performances.
transform-react-remove-prop-types (Promoted)	-2 kB	Remove propTypes.

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This change is

[Bogdaan]

@oliviertassinari +1 must-have plugins in build process, but it is better move this to .babelrc
UPD see - https://babeljs.io/docs/usage/babelrc/

[oliviertassinari]

@koistya Do you want this PR? I can rebase if needed.

[koistya]

@oliviertassinari yep, looking good. I will merge. If you can rebase, that would be awesome!

[oliviertassinari]

@koistya Rebased.

[oliviertassinari]

@koistya Thanks 🎉.