A new beta version has been pushed out to the beta branch (selectable in the Properties window of the app). With added support for the new input profile system in SteamVR.
The dashboard is now usable with the hydra, but the profiles aren't perfect yet, so you can expect some problems with games.
For now, I removed the developer features and made all of the buttons accessible from the new controller binding/mapping interface in Steam, so you can do whatever you want with the buttons.
Also the new default button mapping (which is user changable) is "mirrored". This means that Button3 and Button4 have different functions (Home/Right click) depending on which hand role (right/left) is assigned to a controller. In my experience this is much more intuitive than the previous fixed button layout.
Please download and share your experience with it!