Added Customers model, controller and routes so that they can start chats in SupportMe. Tests pending.
Refactoring Home and Layouts views to improve code readibility on views.
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Layout View

* Moved Navbar into partial.
* Moved Flash notices into partial.
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Home View

* Moved modal into partial.
* Moved login form into partial.
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Files Added / Modified

*	modified:   app/controllers/customers_controller.rb
*	new file:   app/views/customers/new.html.erb
*	new file:   app/views/home/_login.html.erb
*	new file:   app/views/home/_modal.html.erb
*	modified:   app/views/home/show.html.erb
*	new file:   app/views/layouts/_navbar.html.erb
*	new file:   app/views/layouts/_notices.html.erb
*	modified:   app/views/layouts/application.html.erb
Merge branch 'master' into chat_window
Working on the Customer view
Defined User, Customer, Chat model relationships. Added tests to customer controller and model. Coverage is 100 per cent.
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Migrations

* Added relationships between models: customer_id added to Chat.
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Model Relationships

* Customer has_many chats.
* Customer has_many messages through chats.
* User has_many chats.
* User has_many messages through chats.
* Chats belongs_to user and to customer.
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Files Added / Modified in this commit

modified:   app/assets/stylesheets/bootstrap_and_overrides.css.scss
modified:   app/controllers/customers_controller.rb
modified:   app/models/chat.rb
modified:   app/models/customer.rb
modified:   app/views/customers/new.html.erb
new file:   db/migrate/20130618224740_add_customer_id_to_chats.rb
modified:   db/schema.rb
modified:   spec/controllers/customers_controller_spec.rb
modified:   spec/models/customer_spec.rb
Merge conflict in bootstrap_and_overrides fixed