Merge pull request #2077 from jpetto/bug-1020528-fx-usage-campaign-link-param

Add param to #arrange learn more link for GA. Bug 1020528.
Update homepage GA tracking. Bug 1001130.
Merge pull request #2080 from kyoshino/bug-1020764-yosemite

Fix Bug 1020764 - Users on OS X Yosemite see a system requirements error
Merge pull request #2063 from alexgibson/bug-1009570-improve-alt-text-firefox-desktop

[fix bug 1009570] Improve a11y of SVG and img alt text content on /firefox/desktop
Remove /about->/contribute redir: fix bug 1020705
Merge pull request #2079 from jgmize/locale-specific-about-contribute-redirect

Remove /about->/contribute redirects: fix bug 1020705
Merge pull request #2070 from kyoshino/bug-1018949-undelivered-mail

Fix Bug 1018949 - Too many "Undelivered Mail Returned to Sender" coming from contribute@mozilla.org
Update Fx desktop fast tab animation. Bug 1000973.

- Move the tabs down one pixel to fill gap noticeable
  on high resolution displays.
Merge pull request #2084 from mozilla/bug-1001130-update-homepage-ga-tracking

Update homepage GA tracking. Bug 1001130.
Bug 1018724: Temporarily disable translation bar.

We'll figure out the cache issues and enable again very soon.
Merge pull request #2087 from pmclanahan/temporarily-disable-transbar-1018724

Bug 1018724: Temporarily disable translation bar.
Merge pull request #2086 from jpetto/bug-1000973-fx-desktop-fast-animation-image-update

Update Fx desktop fast tab animation. Bug 1000973.
Merge pull request #2081 from alexgibson/bug-918260-update-bedrock-jquery

[fix bug 918260] Update bedrock jQuery to version 1.11
[fix bug 1008491] Add Fellowship section to Get Involved page
Merge pull request #1994 from chikoski/bug987059

Bug 987059: Stopage of the redirection /ja/about/ to /b/ja/about/
Merge pull request #2090 from alexgibson/bug-1008491-add-fellowship-section-to-get-involved

[fix bug 1008491] Add Fellowship section to Get Involved page
[fix bug 1021035] Adjust map attribution on contact page and update mapbox v1.6.3
Redirect mobile system requirements pages to sumo
Bug 1017564
Port Unsupported Systems page to bedrock
Bug 988044
Merge pull request #2056 from sgarrity/bug-1017564-mobile-sysreq

Redirect mobile system requirements pages to sumo