Delegated voting UI changes

[fioreb]

Here you can find the designs for the Delegate voting section, I did it super simple for the v1 release:
https://www.figma.com/file/OksvE2Qph3TOh8sxBwu7dO/Delegate-voting?node-id=0%3A1

And the new icon for the user menu:

[Rodrigo Perez]

We need to re think this screen according to what was talked on the last planning, @fioreb see mitch explorations here https://www.figma.com/file/u7hVQ3gDZefNXfmx6webKW/Delegate-voting-(Copy)?node-id=1%3A1801