I have a Drupal site that I have been slowly developing and stumbled upon Opigno and think it is something I could use. Is it possible to integrate the two? I know theming could be an issue as my other site uses a theme that isn't in the Opigno package. I would love to take the two sites and merge them into one. Right now I have Opigno installed on a subdomain with a different DB so the two sites have separate logins which would be a huge turn off for potential visitors. Also, have you considered integrating social media logins instead of using the regular Drupal registration and login function?