Delete User Story

Template button for delete on User Story Complete view.
Delete event listen to model on User Story view.
Server route for delete updated with new function for destroy the model
in collection.
Return User Story after POST

Added send on response json of user story saved to db
Update User Story

Added action for update model to database
PUT route for user story
isActivity attribute to User Story model

Checkbox in template for mark as activity.
Backbone model attribute and backend attribute for update in database.