Also template handlers only at the end.
Explain conditionals as applied to roles.  I could also explain with_items but the scope questions are complex
here, and it is better to include such loops inside the imported tasks.
Merge pull request #2667 from jsmartin/devel

Added catch-all exception for riak stats collection.
Add link to prior docs version.
Make less template calls on playbook objects.
Errors in documentation.