look at PowerBI's GitHub connector UX. It's perfect! We have a cloud product with similar multi-tenancy data isolation like GitHub. Plus, custom settings to authenticate. Even we have all our data pu...
Custom connector = Content Pack (as explained here: http://blogs.msdn.com/b/powerbi/archive/2015/12/03/power-bi-for-developers-a-look-back-at-our-developer-isv-ecosystem-efforts-this-year.aspx) The development of Content Pack should be documented.
