- Remove int conversion for integration_time
- Move allocating constants in sharedmemory to loading constants cell

1. Move Initialize_from_db to the notebook
2. Remove function and it's test from cal_tools
3. Use CalibrationData Latex table displaying constant timestamps
4. Start storing data in fragment file
5. Avoid errors in case Thresholds or Noise were not retrieved.
6. Update and cleanup cell for adding timing summary

1. Remove max line for guessing group numbers
2. Account for missing constants
3. Flip the table to show modules in rows.
4.remove unneeded remove timezone and seconds functions

snapshot_at to pdu_snapshot_at, restful_config.calibration_client(), and move module_mapping to physical_detector_units property