Fixed: Try methods in AuthorizationHandler could still throw exceptions.
Added context for OpenID; added UserManager.

UserManager implementation will follow.
Updated UserManager.
Added class UserSource.
Simplified authorization.
Removed unused imports.
Updated authorization code.
Updated structure.
Updated comments.
Specified which exceptions to catch.
Merge pull request #45 from daanvc/master

added integration testt for question service, and added a send recieved ...
Made MailSendAnswer internal
Added twitter service
my own web.config
merge fixes
keyword algorithm integration test
forgot app.config
Updated managers.
Merge pull request #47 from geertvh/master

keyword algorithm integration test
Added unit tests for class UserManager.