FR: Return network-connection errors instead of ignoring them

### Feature proposal

* Firebase Component: Storage

**Problem:** Getting data from Storage fails silently when there is no network connection. Therefore, we can either pre-check connection (not desirable) or post-check connection if there has been silence for `n` seconds (not desirable).

**Solution:** When a request to get data is made to Storage, we should always get a response for all possible cases.

**Discussion:** Firebase completion handlers are generally rude in that they only report their own errors and will ignore you when there's an error outside of what it considers its purview, like network connectivity. Firebase completion handlers should be polite and let us know of all failures, regardless of blame. Therefore, I suggest appending `error` to include all errors or keeping `error` the same and additionally returning a conclusion (i.e. `success`, a boolean that bottom lines the task).