Port MARC link logic from old codebase into a model concern.
Add AccessPanels model concern with an Online Access Panel.
Add initial Online access panel UI and basic style.
Add tests for MarcLinks.
Merge pull request #75 from sul-dlss/online-ap

Online Access Panel
Add top level hamburger menu to search bar

Add links to top level menu

Update test for top menu

Fix for top-level menu click area issue

CSS clean-up

Add top-level hamburger menu to search bar with click area fix