A few FIXME notes on some things that need to move
Add delete-measurements
Delete all measurements for a device.
Merge pull request #114 from MastodonC/feature/delete-measurements

Delete all the measurements for all sensors for a device.
Delete hourly & daily rollups

Otherwise we leave them hanging around when the underlying measurements
are gone and the rollups job won't actually tidy them up.
Merge pull request #115 from MastodonC/feature/clean-up-rollups

Delete hourly & daily rollups
First pass of aliases code.
Update UI with Alias field.

Also rename the Parent Device Name to be more descriptive.