Pks/devise google oauth2

[ninjapanzer]

What we have here is an integration of devise with oauth for google

I know this PR is big but it is mostly devise boiler plate

The heavy work is in:

• controllers/users/omniauth_callback_controller.rb
• models/user.rb

Overview

• Devise provides login services
• Oauth acts as middleware to allow login through an external service like google
• I figure this is a good idea due to NuRelm's google apps usage
• Additionally a new role / model can be defined with devise to allow user(clents) to see specific application uptime

Some things came along for the ride

• 2 new gems
• an update to the nav_link helper allowing passthrough of the link_for options hash
• user model

What you need to test

1. Google Client Keys - Checkout .google_oauth2_env for some instructions

2. New Models

   rake db:migrate

3. An admin user - you can run rake db:seed to populate a default

   user: admin@serverfu.com
   pass: password

4. run

   rails s

5. Check it out in your browser.

   There are a two types of signin. The normal user/pass and Sing in with google which will redirect you to the google login screen