Added 'Add Admin' Page
Added 'Add Admin' Page
Merge pull request #25 from sarahgosago/v1.0.0/1957

Added 'Add Admin' Page
Filter Lended/Available Books
Merge pull request #26 from sarahgosago/v1.0.0/1962

Filter Lended/Available Books
Merge pull request #27 from sarahgosago/v1.0.0/1950

redesign user search page/imitate book shelf
Thumbnail of book covers in Manage page
Thumbnail of book covers in Manage page
Merge pull request #28 from sarahgosago/v1.0.0/1966

Thumbnail of book covers in Manage page
Merge pull request #29 from sarahgosago/v1.0.0/1950

fix redirection for admin/staff and also display of error message
improve rendering of disabled/enabled books