Sugar TODO

• Implement the group chat activity. We have a skeleton for it in activities/groupchat. Also sugar/chat has most of the necessary code. It just needs to be refactored in an activity.
• Add back contextual activity chat. For gen1 we are probably going to have a traditional chat window like we used to.
• Add the current activity icon in the friends view. Both backend and gui needs to be written.
• Buddy rollover menu on the frame buddy list. It needs to contain the buddy name, the photo and a "Make friend" button.
• Buddy rollover on the friends view. Not sure about the visual design yet but it should at least contain an invite item.
• Implement mesh view snowflakes. Need to figure with Eben the exact model.