Support multiple Open Seadragon Viewer windows on a single page

[seth-shaw-unlv]

If you attempt to provide multiple images with Open Seadragon view modes selected (e.g. a view displaying multiple nodes with the Open Seadragon display mode selected) only one viewer will work. The rest are all black rectangles.

We should allow multiple viewers to work on the same page. PR incomming.

[mjordan]

@seth-shaw-unlv this sounds like it's related to #1242.

[seth-shaw-unlv]

@mjordan, looking at the original issue, I'm not convinced that they are. In the 1242 ticket is was about displaying multiple Service Files attached to a single node. In this case I have a view displaying two nodes with the open seadragon viewmode enabled. The trouble with this ticket is specific to the openseadragon viewer.

[mjordan]

Correct, it is a bit different, and specific to OSD. Thanks for the clarification.

[mjordan]

@seth-shaw-unlv OK to close this?

[seth-shaw-unlv]

Huh, I guess we forgot to close this when the PR merged. Thanks for the heads-up, @mjordan.

Resolved by Islandora/openseadragon@f99e4a2.