add users
add authenticate
add admin welcome controller
add pages controller
Merge branch 'feature/add_admins' into develop

* feature/add_admins:
  add pages controller
  add admin welcome controller
  add authenticate
  add users
add session new view
add admin welcome page
add ui for admin/pages
fix tests
add test
Merge branch 'feature/make_up_for_admin' into develop

* feature/make_up_for_admin:
  add test
  fix tests
  add ui for admin/pages
  add admin welcome page
  add session new view
Merge branch 'release/0.2.0'

* release/0.2.0:
  add test
  fix tests
  add ui for admin/pages
  add admin welcome page
  add session new view
  add pages controller
  add admin welcome controller
  add authenticate
  add users