Add user role and is_active flag to the users
Setup letter opener and add sample Mandrill configuration for production
Install ActiveAdmin
Create Users ActiveAdmin module
Add chosen to the select fields of active admin
Make the user role field a select field
Install CarrierWave and MiniMagick
Add photo column to the User model
Merge branch 'master' into active-admin

* master:
  Add photo column to the User model
  Install CarrierWave and MiniMagick
Create a base image uploader class
Create the user photo uploader
Merge branch 'master' into active-admin

* master:
  Create the user photo uploader
  Create a base image uploader class
Add user role contanstant
Merge branch 'master' into active-admin

* master:
  Add user role contanstant
Create custom image input field for simple form
Merge branch 'master' into active-admin

* master:
  Create custom image input field for simple form