First pass at social media buttons.
Infrastructure for overlay.
Merge branch 'master' into overlay
beginning of adjusting css on detail panel

header margin
Merge branch 'master' into stylez
Detail panel control fixes for desktop.
Adding "app not available" overlay triggered by location == "www.tothetrails.com" or CLOSED === true.
removing auto-select of first trail on desktop
CSS file changes that haven't been committed yet.
Fixed merge conflicts
Merge branch 'stylez'
Merge branch 'socialButtons'
merge conflict resolution