Fix for breadcrumbs url
Merge pull request #45 from MastodonC/feature/fix-breadcrumbs

Fix for breadcrumbs url
Proper use of time series chart.
Improved date format on chart.
Merge pull request #46 from MastodonC/feature/chart-axis-tweaks

Feature/chart axis tweaks
Initial version of system efficiency overall calc.

- Add calculation
- Round values
- Use partition-all with batches.
- Tidy up etl.