Add institutional support.
Submit inputs extend .btn
Use tag helper instead of content_tag helper for meta elements.
Add NYUAD styles.
Merge pull request #13 from NYULibraries/development-institutions

Development institutions
Update login method to take params argument for login/logout urls.
Add HSL support.
Remove extra cu partial.
Change directory structure for institutional assets.
Fix typo.
Update institutional config for production BobCat.
Update institutional config for production Arch.