Better sentry client errors

[rtibbles]

Summary

Description of the change(s) you made

• Changes sentry error collection for failed requests to captureException
• Simplify handling of context and just use the raw error object for simplicity

Manual verification steps performed

1. Load Studio
2. In Network tools, turn 'throttling' to Offline
3. Confirm that the console logging still works for errors
4. Add raise Exception to the post method of the sync endpoint in endpoint.py
5. Confirm that the resultant 500 errors are properly logged to the console

[bjester]

LGTM