Address #353: [[Unregister]] now updates state of registration.activeWorker
Address #353: [[Unregister]] now updates state of registration.activeWorker

mkruisselbrink/ServiceWorker,justinleoye/ServiceWorker,zuzusik/ServiceWorker,karolklp/ServiceWorker,justinleoye/ServiceWorker,justinleoye/ServiceWorker,karolklp/ServiceWorker,martinthomson/ServiceWorker,zuzusik/ServiceWorker,mkruisselbrink/ServiceWorker,martinthomson/ServiceWorker,chadoliver/ServiceWorker,chadoliver/ServiceWorker,karolklp/ServiceWorker,chadoliver/ServiceWorker,zuzusik/ServiceWorker,slightlyoff/ServiceWorker,slightlyoff/ServiceWorker,martinthomson/ServiceWorker