Collapse Sidebar Menu

[zipymonkey]

The sidebar menu collapses in PSU Flex designs. This functionality would be nice to have in the base theme. We'd could collapse the entire sidebar or target just the menu blocks. This would need to be flexible to handle multiple menu blocks as is done in psul-web.

Acceptance Criteria

• Determine where the collapse should happen (at menu block or entire sidebar).
• Implement.