ArubaOS has a pretty poor web interface compared to Comware 7. It's very basic and lacks most features. Comware 7 has seen such a fast web interface development and now you can configure all the important services from web. It's also very well thought out and mobile friendly.
And before anyone says that one should configure everything from the commandline, I'd say there's plenty of cases where web interface is quicker and preferred. For example when working from a tablet and needing to make a single simple change. Web interface is also much easier to interns and junior techs who often have to make basic configuration changes.
I hope that now that HPE is pushing ArubaOS products over Comware 7, the web interface will catch up with Comware7.