* update ngstorage to new linter configuration
* update ngStorage interfaces
- remove the method StorageService.get() as it does not exist
- add the method StorageService.$supported() which was missing
- StorageService.$default() and StorageService.$reset() return an intersection type of its argument and StorageService
- add the method StorageProvider.remove() which was missing
- add the method StorageProvider.supported which was missing
