Update remaining pages from jquery 1.4.4 to 1.7

Bug 893854
The /firefox/speed, /firefox/happy, and /firefox/geolocation pages having had
their legacy use of jquery 1.4.4 removed. All three pages work fine with 1.7.
Also fix a typo in nav-main-resp.js

@l-hedgehog : This can replace PR #1069