Add followee's tweets when following

[baedert]

That's something I've wanted for a while, but it would suck to have duplicates when following the same person twice. Also, check what happens if the followee's protected.

Problem here being that we don't have any backing model for timelines, so we'd have to look through the entire list of widgets to check for existing tweets with the id.

[baedert]

Same could work for enabling retweets of a user whose retweets where disabled when starting corebird.