Remove site.js loading twice

Signed-off-by: Kaustav Das Modak <kaustav.dasmodak@yahoo.co.in>
Fix #11: Disable tabindex-based focus on resp menu
Update index.html

Added code to link the page with the mozilla.org site.
Merge pull request #27 from KKDeep/patch-1

Happy New Year! :beers:
Updated index.html with Google+ authorship
Merge pull request #23 from kaustavdm/issue-11

Remove site.js loading twice & fixed tabindex-based focus on responsive-menu
Merge pull request #1 from MozillaIndia/master

Update Master form mozillaindia