New Qubes application menu

[enmus]

AppImage "integration"?

Well, I am almost sure people tend to have same AppImages in different VMs (I’d do for security and privacy reasons), which should be kept on mind regarding confusion and/or cluttering. We will anyway have new launcher, so its Favorite section seems the best place to me for such needs. Allowing to create folders in favorites would be logical step ahead, so I will just suggest it on the correspondent topic, hahah.