Add Subheader Component with Menu Control
fixes #38 (closed)
This adds a sub header with:
- menu button
- program title
- cooperator information (optional, w/ multiple cooperators allowed)
It also allows the user to expand/collapse the menu, and is collapsed by default on mobile. For now the menu just pushes the page content down, and the menu is collapsed on an angular route change (assumes the user interacted with the menu). They also have the ability to scroll past the menu to see the page content and leave the menu expanded.