allow site maintainers to prodive a description for each application

src/app/app.module.ts

src/app/launch-dialog/launch-dialog.component.html

src/app/launch-dialog/launch-dialog.component.ts

src/app/settings.service.ts

src/app/settings/settings.component.html

src/app/strudelapp.ts

src/assets/config/m3apps.dev.json