Update react-native to version 0.23.0 🚀

[greenkeeperio-bot]

Hello :wave:

:rocket::rocket::rocket:

react-native just published its new version 0.23.0, which is not covered by your current version range.

If this pull request passes your tests you can publish your software with the latest version of react-native – otherwise use this branch to work on adaptions and fixes.

Happy fixing and merging :palm_tree:

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The new version differs by 1133 commits (ahead by 1133, behind by 15).

• db8273e [0.23.0] Bump version numbers
• 2c4dda2 Add download links for Android NDK to the docs
• a5b95d5 Fixed images required from node_modules
• 7c031ca RN: Packager URL defaults to port 8081 if no port in bundleURL
• 3983282 [0.23.0-rc4] Bump version numbers
• 464a2e8 Usereact-nativeinstead ofReacton hmr config
• 064d57d Fix fetching sourcemap in genymotion. Fixes #5338
• 3e956f6 [0.23.0-rc3] Bump version numbers
• 9c2c2a5 Version release script
• 213a7b3 Add testing HMR into manual testing steps
• 298207c Allow react-native init <version> + removed sinopia from being required for e2e testing
• 992d39f Npm publish
• ef1fdf8 [0.23.0-rc2] Bump version numbers
• d782af2 Revert "Android support for perspective transform"
• aa83db7 Fix website

There are 250 commits in total. See the full diff.

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