#6123: Convert embed to array before getting its properties, just to be sure.
Merge pull request #6137 from openscholar/6123-video_thumbs_3.13

Convert embed to array before getting its properties, just to be sure.
Clean fix for #6059 without tests.
Fix the cache - ID
Fix the cache id, second instance
Merge pull request #6139 from openscholar/6138

Fix the caching of the facet filter widget
Merge 3.13