Now that deliberation will be a function hook rather than a sitewide
concept, the old method needed to be removed.  This change gets all the
infrastructure cleaned out and ready for the new method.

This changes the labels, filenames, variable names to use "Deliberation"
and "Choice" instead of "PickSome" and "Pick".

This makes no attempt to migrate for past installations of the tool. Any
site that is currently using the PickSome tool will need to manually:

1. Rename the PickSome database to "Deliberation".
2. Update the LocalSettings import to import Deliberation instead of
   PickSome.

Issue #3

This was the code that used to reside at
github.com/OpenTechStrategies/torque but needed to be split into
its own repository for maintenance reasons.

We pulled it at sha 3331953