Audio mix2

This PR does a bunch of stuff. I've tried to seperate it out into different commits.

Roughly:

• modified api.js
  • made a getName function
  • seperated out parts which are more live updates into live-updates.js
  • made a new setName method
• names
  • connected form on /profile page to publish an about message for yourself
  • modified the whoamoi api call to return { feedId, name }
• playback
  • there's a progress bar now
  • the play button changes color now when you are in different states
  • did a bunch of simple styling to make it nicer to look at / work with (/feeds page mainly)
• duration
  • connected up bits of calls already in place to ensure duration makes it through to being published in audio messages
  • display this in UI when it's present!

App is starting to feel really great. This is ready for review + merge @luandro