Wrap modal contents in `.seam-components` class

[mikewuu]

          Will this make integration difficult for our consumers? Do we need to document this or can we find a solution that will wrap the model in the right class?

Originally posted by @razor-x in #47 (comment)

To avoid consumers from having to wrap modals in .seam-components, we'll automatically wrap all components in this class again.

[razor-x]

How about this solution?

• Remove class from provider.
• Add to all top level components.
• Remove from story dialog components.

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[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs.