Phase 1: Withings service updates

- Working around Withings API (limits and filtering).
- Cannot use withings gem user#meausrement_groups for retrieving user measurements since it does not handle batching.
- Updating code that relies on the import.
- Do not try to re-authorize with withings if there is a valid authorization access stored.
I did do this at first.  However the data keeps changing based on what I'm finding out from the API and the gem.  Once it seems pretty stable, I will move this to a file.  I already did this in a few commits before but ripped it out.