updated storageService.clear() test. refs item:762
removed clear() and corrected destroy() refs item:762
refactored storageService.clear() to use destroy() refs item:762
removes idb-service refs item:762
removes idb-service test suite refs item:762
removes idb-service unused DI refs item:762
removes IDB-Service link refs item:762
Merge pull request #481 from jofomah/bug/switch-to-db-destory

Bug/switch to db destory