Incorporate basic feedback into the docs site

[vandan]

Feedback mechanisms:

• "Did you find this useful" widget
• Feedback button
• Surveys (Stretch)

We can implement this feature with GetFeedback (and Momentive):
Here is the info for installing a "Feedback" button.
Here is the info for installing in page widgets (e.g. did you find this useful 👍 👎 )
Here is the info for installing a pop-up survey (for NPS etc)

[vandan]

We need access to GetFeedback & Momentive in order to generate the code snippet for this feature.

[httpJunkie]

Where would we like these forms to posy to?

Why not build a react component that uses a typeForm?

https://medium.com/typeforms-engineering-blog/building-typeform-react-embed-sdk-e3985efccfc5