Replacing OpenSeadragon Viewer with Mirador viewer

[kylehuynh205]

Todo (done):

• Create a new View mode as Mirador View similar to OpenSeadragon View
• Apply the logic for View mode field with additional View mode "Mirador Viewer"
• Set Mirador Settings > IIIF Manifest URL for media at /admin/config/media/mirador
• Encounter the NULL error for Line 137 for $node = \Drupal\node\Entity\Node::load($nid); in iiif_view_manifest
  • Applied the fixed digitalutsc/iiif_view_manifest@54be9c7
• Updated / Manually save View mode field to add Mirador Viewer option to the field's dropdown list at /admin/structure/types/manage/islandora_object/fields/node.islandora_object.field_view_mode

Outcome:

Applied the change in a few nodes as example across sites:

• https://core-dsu.digital.utsc.utoronto.ca/lin-lee-restaurant---page-1
• https://doris3.digital.utsc.utoronto.ca/node/1018
• https://ecn.digital.utsc.utoronto.ca/node/105
• https://memory.digital.utsc.utoronto.ca/node/11285

To bulk applying:

• Use Workbench to update the value of View mode field

Added to the sites installation processes:

• https://github.com/digitalutsc/islandora_display/commits/main/config/install
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