fix bug 844189: Dump gaia shared style into MDN media resources
fix bug 844137 - Add fonts from gaia
Merge pull request #883 from lmorchard/844189-add-gaia-common-style

fix bug 844189: Dump gaia shared style into MDN media resources
Merge pull request #884 from darkwing/fonts-844137

fix bug 844137 - Add fonts from gaia
fix bug 839314 - Don't show hidden demos with next/prev
Merge pull request #886 from darkwing/demo-next-prev-839314

fix bug 839314 - Don't show hidden demos with next/prev
fix bug 844321 - Allow PSDs
fix bug 844531 - Add more Gaia CSS and art resources to Kuma media directory
Merge pull request #887 from darkwing/psds-844321

fix bug 844321 - Allow PSDs
Merge pull request #888 from lmorchard/844531-add-more-gaia-css

fix bug 844531 - Add more Gaia CSS and art resources to Kuma