Added qtrix clone operation to facade and CLI.

Allows creation of a config set from another config set,
so that it starts with the original config sets queue
weights and overrides and may be manipulated from there.
Added Qtrix::Queue#to_h alias for Qtrix::Queue#to_map
Merge pull request #2 from PeopleAdmin/config_set_clones

Added qtrix clone operation to facade and CLI.