Merge pull request #2022 from pjackson28/v3.0

Added mobile view support for nested div elements in mega menus (#2009)
Merge pull request #2024 from pjackson28/v3.0

Added CSS to support a title subline
Merge pull request #2029 from pjackson28/v3.0

Added project related menu and footer content for home and main demo page
Fixed broken links to license files in working examples index pages.
Merge pull request #2030 from EricDunsworth/v3.0-broken-link-fixes

Fixed broken links to license files in working examples index pages.
Ported v3.1 unlinked headings in mega menus support.
Added JSHint scripturl tolerance to pe-ap.js.