Apply new secondary nav styles
Align the templates of primary and secondary nav items
Fix place-title hover
Remove redundant sass around the secondary nav
Move doctype_declaration into snippets/
Remove pointless detect_touch partial
Secondary navigation design tweaks

Includes:
- Fix bugs introduced with user_feed
- Remove redundant global resources methods
- Add shadow to the flyout arrow
Move primary and user nav data into yml files

Also includes:
- Responsive Nav hovers over the top of content
- Fix join button in user nav
- Legacy fixes
Merge pull request #868 from lonelyplanet/if-secondary-nav

If secondary nav