As part of #55, we have a functional button to hide the keyboard, but it doesn't match the designs: <img width="885" alt="screen shot 2018-10-17 at 3 55 14 pm" src="https://user-images.githubusercontent.com/1200432/47115757-2ae3df80-d225-11e8-9e35-a0ba4d4f9c72.png"> We need to make sure it has the right icon and that it stays on the right side of the toolbar
