Mark SQS dry-delete test as idempotent.
Add defaults and descriptions to options.
Rewrite all options via new standard.
Prevent useless options from being passed in.
Catch all errors before bailing out.
Use base.option() to get options values
Don't copy option values to object.
Standardize setup_defaults and validate_options
Treat string and basestring alike
Add self.option() documentation
Multiline
Issue: #73 - GenericHTTP actor.

* Unify mock_tornado() and tornado_value() helper functions during testing.