After getting my HADashboard installed, configured and customized the way I wanted it, I started trying out different full-screen browsers for android, and eventually found Fully!
It’s free to use, full screen, highly configurable, and offers some really neat pro features (requiring a license), like remote administration, motion detection, REST API, and can even be configured in a kiosk mode that locks out access to android entirely. It can be found here: http://www.ozerov.de/fully-kiosk-browser/
So if you’re looking for a browser to display HADashboard, give it a try, it won’t disappoint.