Change home page Featured sets design.
Change spec to use regular expression instead of testing for full string.
Merge pull request #513 from sul-dlss/home-page-features

Change home page Featured sets design.
Merge pull request #522 from sul-dlss/db-test-fix

Change spec to use regular expression instead of testing for full string
Fix bug in MarcLinks when trying to process an 856 w/o a .