Get form to render as expected.
Simplify cqlstore some more.

Since the app only persists one sess.Values field, it's a lot
simpler to save it directly rather than gob encoding the whole
Values map.

Added a bunch of logging to help with debugging. May be removed in
the future.

Implemented logout.
Change data blob to email text.

Didn't need anythign else that might have been in the blob. This
is simpler and now emails are visible in cqlsh, which helps.
Fill in attributes.
Implement score updates.
Time to commit. Most functionality is present.

The modals, overview, and score entry are mostly working at this point.