Fix results styling.

[benattal]

Re-implement results styling.

[sevko]

Managed to salvage what we currently have with 23d6f90, making some slight modifications to improve portability and fix styling bugs.

[sevko]

We decided to re-engineer the hidden metadata display such that codelets remain a fixed width and, when clicked, toggle between displaying code and metadata. #76 requires that we rework our syntax-highlighting mechanism, so this'll have to wait until that's implemented.