In general, you can safely ignore this. Some part of Cabana is built with a different version of Developer Express. We're working on it.
If you want, you can double click on the warning message and Visual Studio will offer to add assembly binding redirects to your App.config file. This will get rid of the warning, but you'll need to remember to adjust these when moving to a new version of DevEx.
If you do this, I recommend looking at the App.config file to check what VS did.