Closes #120
Closes #130
Closes #128
Closes #129
work in progress
closes #115
Merge branch 'sourcefile'
added thumbnail style
Closes #83
Merge branch 'show-thumbnails'
added thumbnail route
removed dead route - closes #132
added tests for #thumbnail action
added test for #has_thumbnail?
removed redundant tests of FileContentDatastream functionality
Added #thumbnail action
Use new path for thumnail; added alt tag to thumbnail
Added #has_thumbnail? method
closes #134
Merge branch 'master' of github.com:duke-libraries/dul-hydra
work in progress
added #has_content? method