added checkbox for subscribed apps in application view

src/app/shared/applications/applications.component.html

src/app/shared/applications/applications.component.spec.ts

src/app/shared/applications/applications.component.ts

src/app/shared/applications/list/applist.component.html

src/app/shared/applications/list/applist.component.ts

...hared/applications/list/element/appelement.component.html

.../shared/applications/list/element/appelement.component.ts

src/app/shared/shared.module.ts