Epilogue: Display Active Site Picker

[jleandroperez]

Details:

This interface should be displayed after the authentication flow.

• We need to figure out what to do in the scenario in which the user has no sites. Should the app let you thru, and see placeholders? or stay in an eternal Site Picker?
• Make sure to handle the scenario in which the app is killed, before the user picks a blog.
• Wire up Davide's awesome Assets

[folletto]

Note that there's an i5 blueprint now. :)

[jleandroperez]

Thanks for the heads up @folletto !! blueprint + assets updated.