Here is how I would do this. I would create a branded header and footer on an html page or using an interactive product like Microsoft .NET. Then I would deploy a sign on system and then link that to Qlik using single sign on. For viewing qlik charts and reports I would use the API to show that information. On our end we are using qlikTicket that we get using the API and populating an iframe linked back to qlik. To ensure it scales properly we are using bootstrap responsive iframe to allow it to upscale or downscale with the browser. Hope this helps, this isn't going to be a 10 minute thing though as Qlik does not have built in branding capability.