Refactor Feed & Score Nodes

### What to refactor?

- `app/scoring/score_nodes.py`

### Refactor reasons and solutions

- [ ] Score nodes presently use unconventional python naming with variables in ALL_CAPS format,
- [ ] has a few variables that are declared and never used
- [ ] does not use dependency injection as it should.
- [ ] it is only used by the feed but is located in the scoring folder so it should be relocated.
- [ ] Storing the climate feed into the db should not occur in this class.
- [ ] Feed uses some variables in ALL_CAPS, a generalized try/except to catch multiple types of errors,
- [ ] Imports are not in pep8 order & relative imports should be used when possible
- [ ] Both should use Pep 287 reST formatting for docstrings.
- [x] We're passing a quiz_uuid to a query for a session_uuid in the localized graph function and this is bad!

### Tests

- [ ] unit tests