Set IIIF Manifest title from source entity

[alxp]

What does this Pull Request do?

Changes default title of IIIF Manifest view from "IIIF Manifest" to the title of the node or media the manifest is generated from.

What's new?

Add a function to the IIIF Manifest view type that that gets the title of the node or media that the manifest represents.

If a user changes the display title in the view settings that will be used instead.

How should this be tested?

1. Enable islandora_mirador module.
2. Create content as follows:: A Repository Item with model "Paged content"
3. One or more Repository Items with type FIle
4. Media for each Page items, of type Document, with a TIFF file attached.
5. Go to node/[nid]/book-manifest. Observe the Label field contains the title of the Paged Content node.
6. Optionally, Set the display Hint to Mirador and ensure the viewer displays the node title rather than "IIIF Manifest"

Documentation Status

• Does this change existing behaviour that's currently documented?

No

Interested parties

Tag (@ mention) interested parties or, if unsure, @Islandora/8-x-committers

[rosiel]

Tested, and it works. (But I can't merge, since I work with @alxp)

[jordandukart]

Can also confirm that via configuration inspector that changing the schema as it is should be sufficient. 👍 from me in that regard at least.