Make select verification method screen more appealing, closes #203

[jverbraeken]

• Relevant Issues: #203

• Related Pull Requests: -

• • *

What

This Pull Request adds to the repository more appealing buttons to choose the verification method for Bluetooth

Why

This Pull Request is needed because the old buttons in VerificationActivity were not formatted and their design didn't really suit the rest of the app

How

This feature can be viewed/tested within the project by connecting to somebody over Bluetooth and judging the screen in which you choose the way you want to pair

Alternative implementation

Other implementations that I've have considered are

• An animation (gif). However, this would cost too much time to implement in the last few weeks. We can better spend our time on other things imo.

  Notes

[ericcornelissen]

Merged regardless of Travis CI status, unexpected androidTest failures (probably due to a crashed emulator)