Adds new retail customer feature
Adds form and create actions to retail customer controller
Adds persistence of retail customer
Adds model validations
fix validations to reflect errors on form
refactor RetailCustomerController
improvements to code style
Update new customer logic to work with authentication
Apply basic style to new retail customer form
Adds add new customer button
optimized imports
Removed unused variable declaration from test.
Merge pull request #3 from pivotal/new-customer

Data Custodian can create Retail Customer