Improve UI for transcription

[ddfridley]

go to localhost:3011/candidate-conversation or https://undebate-qa.herokuapp.com/candidate-conversation you can also try:https://undebate-qa.herokuapp.com/san-francisco-district-attorney

• [ ] Currently, there is one tab to see the Agenda, and another Tab to see the transcription. How can we show both at the same time?
• [ ] Currently, we shrink the fontSize of the transcription text if the text is too big to fit in the box. In some cases, that might be shrinking it too much. We need to make it so that the text automatically scrolls to keep the current sentence in the center, and allow the user to scroll the text manually.
• [ ] Add an indication that this transcription was automatically generated by "Google Cloud Speech to Text". But if we switch providers, have a way of showing the name of the provider. And if candidate edits it the transcription - should we say nothing or "reviewed by the candidate".