Add OwnerName and OwnerId properties to CF

Pull current IAM account information and send as properties so that
objects can be tagged with an owner, as per suggestion of leozh.
Passing through stack naming option
Merge branch 'aws-tag-owner' into named-stacks

Conflicts:
	nepho/providers/aws_provider.py
Use same status display for create/destroy/status
Cement-style signal handling
Improving how completed delete displays
Support custom stack names in AWS
Merge pull request #218 from huit/named-stacks

Allow custom stack names for AWS, and tags stack objects with info from IAM