user views standards after logging in

* clean up some whitespace and rails 3.2 syntax
* rename requirement field to name field for Standard in order to stick
with Rails conventions
* add separate tests to show PCI standards for guest and logged in users
Merge pull request #6 from akshatpradhan/show_standards_for_users

user views standards after logging in
user views standards on their profile page

* show all standards and a greeting on user’s profile page
* redirect to user’s profile page after signing in
* redesign current user’s page to look like wireframe
Merge pull request #7 from akshatpradhan/manage_requirements

user views standards on their profile page
attach and view a proof for a particular standard

* add ability to attach one proof for one standard with integration
tests
* restrict proof route to everything but index
* redesign homepage and users#show page
Merge pull request #11 from akshatpradhan/manage_requirements

attach and view a proof for a particular standard
replaced standard with requirements model
renamed spec helpers and factories
Merge pull request #18 from super-engineer/master

rename Standard scaffold with Requirement scaffold