This requires Qt4 with Webkit support, which is currently unavailable. The developer is currently working on porting Anki to Qt5, which we do have Webkit support for. The other option is rebuilding Qt4 for Webkit support, which is out of my league.
I will keep an eye out for when the Qt5 build is live and will promptly build and submit a package.
Out of interest looks like they are making good progress on the port to Qt5.
The latest alpha builds are running on Qt5.