- Rename 'style.css' to appropriate ID-based name.
- Remove explicit inclusion of CSS, as it will now be auto-included.
- Update tests which explicitly checked for styling.
This is pretty much a straight one-for-one swap with some minor goodness
in the form of the already wrapped up array handling in one case.
I did not do any refactoring of the code although some places looked
like they could use it.
Addresses issue #591.