Remove 'bolt set'.

This commit removes the 'set' command in the Bolt CLI. It proved to not be very useful
so there's no point in keeping the extra code around.
Merge pull request #152 from benbjohnson/remove-bolt-set

Remove 'bolt set'.
Consolidate code for clarity.

This commit consolidates some of the smaller files into some of the larger files.
The smaller files cluttered the file tree and made it harder to see the logical
groupings of structs.
Merge pull request #153 from benbjohnson/consolidate

Consolidate code for clarity.