Changing image sizes

I’m also changing the way some of the versions are resized. I want them
to keep their original aspect ratio instead of cropping (resize_to_fit
instead of resize_to_fill).
Merge pull request #91 from biola/changes_to_images

Changing image sizes
Add custom search to the academic-publisher models.
wooopwooopwoop
Merge pull request #93 from biola/add_search_to_models

Add custom search to the academic-publisher models.
Merge branch 'master' into degree_program_concentrations