A dialog that allows the user to set a profile picture.
- Allow selecting the a picture for a user account:
- Profile pictures from online accounts
- Take a picture using the camera
- Pick from a set of nice stock images (primarily of use when there aren't online accounts and/or there's no camera)
- Potential uses - user settings, initial setup, Contacts
- Ensure that users don't end up with a generic default profile picture - generate a unique image for each user and use that as a fallback