Tag gallery to terms.
Adding images.
Merge branch 'SCHOLAR-3.x' into 1870-gallery
Add missing dependency.
Merge branch 'SCHOLAR-3.x' into 1870-gallery
Fix conflict.
Add galleries to the tagged items test.
Merge branch '1870-gallery' of github.com:openscholar/openscholar into 1870-gallery
Merge pull request #1902 from openscholar/1870-gallery

Tag gallery to terms.