Add actions tab and move Duplicate and Out of scope functionality
Pull out Close As Duplicate tests. Add back Out Of Scope tests
Make partial names more consistent
Move method into helpers and update view to call the helper
Remove unnecessary code
Addressing test issues:

  * Removing context from close as duplicate tests
  * fix test name
  * improving assertions on content present on page
Merge pull request #70 from alphagov/actions-tab

Move 'Close as a duplicate' button from Edit page to Actions tab.