Update to 2019 using latest packages

[masbaehr]

Hi could you please update this project to work on latest versions e.g. Java 12, SDK 28. Unfortunately i wasnt able to run this in 2019.

aws-amplify ^0.2.11 → ^1.1.40 aws-amplify-react-native ^0.2.7 → ^2.1.19 moment ^2.20.1 → ^2.24.0 react 16.2.0 → 16.9.0 react-native 0.52.1 → 0.60.5 react-navigation ^1.0.0-beta.27 → ^4.0.5 react-redux ^5.0.6 → ^7.1.1 redux ^3.7.2 → ^4.0.4 redux-persist ^5.5.0 → ^6.0.0 redux-thunk ^2.2.0 → ^2.3.0 babel-jest 22.1.0 → 24.9.0 babel-preset-react-native 4.0.0 → 4.0.1 jest 22.1.4 → 24.9.0 react-test-renderer 16.2.0 → 16.9.0