Moved the following helper functions to DisqusCommentManager :
disqus_sso_disqus_settings()
disqus_sso_key_encode()
disqus_sso_user_data()
Explicitly defined functions public in DisqusCommentManager.
Fixed error: memberfunction call changed to $this->func()
Merge pull request #8 from angrycodr/Move-sso-helper-functions-to-a-class

Moved the following helper functions disqus.module to DisqusCommentManager : disqus_sso_disqus_settings(), disqus_sso_key_encode(), disqus_sso_user_data()