Added sass-rails dependency as per https://github.com/projecthydra/hydra-head/commit/0e03bab82c72a560bd2775a1433278884d580684 to fix build.
Added sass-rails dependency as per https://github.com/projecthydra/hydra-head/commit/0e03bab82c72a560bd2775a1433278884d580684 to fix build.

samvera/hyrax,samvera/hyrax,samvera/hyrax,samvera/hyrax