Add feature file for the action plan.
Update the step definitions based on feedback.

@gjvis
Add scenario for translating article and change language not to mention an error page.
Add new line
Refactor action_plan.feature

@alexwllms
Add action_plans to site prism world

@alexwllms
Fix typo in world/action_plans.

@alexwllms
Add action_plan factory.

@alexwllms
Add action_plan page.

@alexwllms
Add action plan cassette

@alexwllms
Add action plan decorator.

@alexwllms
Add action plan show view.

@alexwllms
Add action plan to the world.

@alexwllms
Add feature view action plan in multiple languages.

@alexwllms
Add translate action plan scenario.

@alexwllms
Add call back to action plan controller / spec
Fix typo
Add html processing to action plan.
Merge branch 'action_plan/tests'