User can recommend product to another user

[stevebrownlee]

Given the user is viewing a product detail
When the user performs a gesture on the Recommend to a friend button
Then the user will be presented with a view so (s)he can type in another username and see a Send Notification button

Given the user has entered in another username in the recommendation screen
When the user clicks on the Send Notification button
Then the user will be taken back to the product detail view that they were viewing originally

Given a user has recommended a product to another user
When the receiver logs in next
Then the recommendation icon in the navigation bar will have it's notification count increased by one