bug 839214 - elasticutils and search mapping

add elasticsearch-head plugin

simple cron to reindex documents

update vendor submodule for elasticutils
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
bug 818580 - changes in wiki editor js and adding class to need review section

bug 818580 -  The editor is under text element at the page's bottom
bug 818212 - Upload img and add css styles for p2pu logo
Bug 694796 - add localizers to humans.txt
Bug 694796 now respecting PEP 8
Merge pull request #890 from tx2z/bug-818212

bug 818212 - Upload img and add css styles for p2pu logo
Merge pull request #889 from tx2z/bug-818580

bug 818580
Merge pull request #881 from groovecoder/document-index-794525

bug 839214 - elasticutils and search mapping
test case fixed to work with bug 694796 patch
Merge pull request #891 from netoarmando/bug-694796-localizers-humans_txt

Bug 694796 - add localizers to humans.txt