add devise for authentication
add login/logout links to menu
convert more layouts to Haml
force SSL in production
start sketching authorization
add high_voltage for static pages
add notion of membership in a repository; start sketching site manager abilities
mark relationship between users and repositories
start sketching repository editor role
add repository manager role
don't link to actions the user can't perform
continue tweaking editor permissions; ensure that users without permission don't get links to repositories or records
trim excess permission
finish rough sketch of authorization model
Merge pull request #48 from uklibraries/add_users_and_roles

Add users and roles