admin attribute for users
users controller & user integration tests
user sign in/up pages tests
deleting users
finding users
user#index table css
name fix
some fixes to css
admin pages
admin panel css
add friendly_id to subjects
flash messages partial
added Admin/SubjectController
sortable user table
admin/subject#index
deleting subjects from admin panel
refactor old lesson routes and forms
change the form label
admin/subjects#new
admin/subject#edit & update