Inclusion corrections for SB Custom Sidebars
is_active_sidebar() was added in WP2.8, negating need for is_sidebar_active()
add ARIA "complimentary" role for sidebars
Use html5 <aside> for widgets
revise do_sidebar() to support HTML aside elements
Update sidebar registration to support new add_theme_support method
Streamline sidebar registration
Update custom sidebars to properly register
Dump custom sidebar cache on sidebar restoration