on page reload state is restored

src/app/admin/workspace.component.html

src/app/app.component.ts

src/app/backend.service.ts

src/app/maindata.service.ts

src/app/start/start.component.html

src/app/start/start.component.ts

src/app/superadmin/superadmin.component.html

src/app/sys-check/backend.service.ts

src/app/sys-check/start.component.html

src/app/sys-check/start.component.ts

src/app/sys-check/unit-check/unit-check.component.ts

src/app/test-controller/test-controller.component.ts