[Issue 465] Continue with Authentication if AvatarService is None.
Merge branch 'issue465' of https://github.com/cemcatik/securesocial into cemcatik-issue465
- Replaced Future() with Future.succesful
- Fixed: if the avatarService returned NONE the authentication would fail
- Improvement: avoid creating a copy of the profile if the avatar url remains the same
- Introduced new methods to simplify the doAuthentication method
updated changelog for #471
Merge branch 'cemcatik-issue465'