add admin//sessions
admin routing
add admin functional
add admin_welcome_index route
add admin welcome views
add admin application controller
fix admin_welcome functional
add authenticate_admin!
add admin blog_posts functional
remove admin functional from blog_posts_Controller
admin routes
remove admin functional from application_controller
remove admin functional from news
add admin_news functional
Merge branch 'feature/admin_functional' into develop

* feature/admin_functional:
  add admin_news functional
  remove admin functional from news
  remove admin functional from application_controller
  admin routes
  remove admin functional from blog_posts_Controller
  add admin blog_posts functional
  add authenticate_admin!
  fix admin_welcome functional
  add admin application controller
  add admin welcome views
  add admin_welcome_index route
  add admin functional
  admin routing
  add admin//sessions