Redirect after login based on roles
Move /admin route to Ebooksforlib::Route::Admin
Move the concurrent loans setting to /admin/settings, add Ebooksforlib::Route::Admin::Settings
Move detail view settings to /admin/settings
Move routes for adding and editing books to Ebooksforlib::Route::Admin::Books

Also clean up the admin pages related to books a little.
Move routes related to lists to Ebooksforlib::Route::Admin::Lists
Move lists admin to a separate page
Merge branch 'master' of https://github.com/MagnusEnger/Ebooksforlib