Feature/remove datasets functionality

[StRhys]

What

This removes /datasets, associated functionality and enableDatasetsImport

Removed the datasets folder from views, only leaving datasets-new, which would be worth renaming to datasets in the future.

The datasets button will always appear in the nav bar. Removed enableDatasetImport from legacy so thats the case for them too, and API dataset in the nav.
I've replaced deletePageIncludingDatasetImport with the default deletePage but still uses the functionality of deletePageIncludingDatasetImport. Sending a delete request to /zebedee/page/instead of/zebedee/content/`

How to review

• port forward to the api router - dp ssh sandbox publishing 2 -p 23200:localhost:10800
• I was running the home publishing stack
• make dev in florence

Removed routes:

• /datasets
• /datasets/:datasetID
• /datasets/:datasetID/preview
• /datasets/:datasetID/metadata
• /datasets/:datasetID/editions/:edition/versions/:version
• /datasets/:datasetID/editions/:edition/versions/:version/metadata
• /datasets/:datasetID/editions/:edition/versions/:version/preview
• /datasets/:datasetID/instances - ??
• /datasets/:datasetID/instances/:instanceID/metadata - ??

Example page:

• https://publishing.dp-staging.aws.onsdigital.uk/florence/datasets/suicides-in-the-uk/editions/2018/versions/1/metadata

Sense check.
Tests pass.
Did I miss any /datasets or enable datasets import functionality.

Who can review

Not me