Making BitmapResponseHandler it's own public static class
- Handles the failure case better preventing crashes when there's a failed http request
Fixing out of bounds index

When requesting a note the user does not have access to (e.g. the wordpress.com credentials
were changed) it's possible to receive no notes back when requesting that note's specific
id.
Stop animating refresh indicator when token request is done
Moving JSON querying to JSONUtil class to make it reusable
Replacying Note.queryJSON with JSONUtil
Improving UI feedback for comment replying

- Clears the reply field
- Shows a toast when reply is successful
- Shows a notification for failure that opens the failed reply back up