Bug 922373 - Please add @Mozilla Twitter link to website footer on mozilla.org

And Bug 921833 - [es-ES] [pt-BR] Twitter link on mozilla.org directs to
English Twitter account
[fix bug 775932] change about page privacy link

Signed-off-by: Mike Alexis <mike.alexis@gmail.com>
Bug 935673 - Firefox landing page incorrectly detects the previous version as the latest version

Just remove the subtraction. It has rather confused users.
Bug 947433: Add custom whatsnew page for Nightly 29

Also fix whatsnew and firstrun view's ability to
accept POST requests for newsletter signups.
Create whatsnew page for Firefox Nightly 29
Bug 947433
Fix bug 860873 - add survey to stub installer fallback page
Merge pull request #1533 from craigcook/bug-860873-stub-installer-fallback-survey

Fix bug 860873 - add survey to stub installer fallback page
Bug 947992 - Request to Verify YouTube on Mozilla.org
Merge pull request #1530 from mozilla/whatsnew-nightly-29-947433

Bug 947433: Add custom whatsnew page for Nightly 29
Activate home add-ons 2013 promo. Bug 941923.
Replace VTCS home promo with Fx OS promo. Bug 941185.

- Replace L10n promo tag for Webmaker with 'promo_webmaker'.

- Remove all VTCS images/CSS.
Merge pull request #1509 from m-alexis/bug-775932-about-privacy-link-change

[fix bug 775932] change about page privacy link
Merge pull request #1514 from kyoshino/bug-935673-wrong-latest-version

Bug 935673 - Firefox landing page incorrectly detects the previous version as the latest version
Merge pull request #1458 from kyoshino/bug-922373-footer-social

Fix Bug 921833 and 922373, footer social links
Bug 919581 - Remove conditional for en-US/locales on about/ intro paragraph
Merge pull request #1542 from flodolo/about_intro

Bug 919581 - Remove conditional for en-US/locales on about/ intro paragraph
Merge pull request #1539 from jpetto/bug-941185-replace-vtcs-with-fxos-promo

Replace VTCS home promo with Fx OS promo. Bug 941185.
Merge pull request #1541 from jpetto/bug-941923-activate-addons-promo

Activate home add-ons 2013 promo. Bug 941923.
Merge pull request #1540 from kyoshino/bug-947992-youtube-verification

Fix Bug 947992 - Request to Verify YouTube on Mozilla.org