Refactor: Story: Remove leading spaces

... formatting.
Introduce mindset: Roadmap

The 'roadmap' mindset is for easily putting
stories between two mileposts.

This first implementation puts together a
lot of our existing codebase -- basically
we just show another story list, that shares
the same data, but only shows mileposts.

The YUI drag and drop library happens to
"just work" for us in this scenario.
Roadmap: Work around moving a story to same spot

If we move a story from the story list into the
"same location" in the mileposts list, the drag
and drop library (or something) wants to keep
the story in the mileposts list.

To work around this, reset the data binding when
this happens. This causes a slight delay.