- Publish avatars with a size of 200x200
- Add AvatarSize.PUBLISH so we can easily change it in the future
- Dont upscale small avatars on publish
- Use surfaces for displaying the avatar in ProfileWindow and VcardWindow
because this scales correctly on HiDPI screens
- Add support for Pubsub Avatars
- Dont poll for vCard Updates, only use XEP-0153
- Dont cache vCards
- Store the avatar SHA of roster contacts in the DB
- Store the current SHA of each contact in the Contacts Object
- Move some code into the ConnectionVcard Class