Use Safe Area View to make sure of editor usability on new iphones

[sallesma]

Before sending your pull-request 💌 make sure :

• [ ] The tests are up-to-date and your code is tested

@arribbar could you test if the layout is better in the editor? I have no way to try it myself...

Otherwise we could use something like this to add bottom spacing...

    ...Platform.select({
      ios: {
        padding: 5,
        alignItems: 'flex-start',
        minHeight: 60,
      },
      default: {
        alignItems: 'center',
        minHeight: 40,
      },
    }),

Resolves #318