bug 936123 - add newsletter signup form to profile

move newsletter subscription form into an include template

show newsletter subscription form on profile edit screen

put profile newsletter subscription behind waffle flag
add link to mdn-tests to README
bug 945117 - nav menu link for Add-ons zone
Prevent zone margin and overlap issues per Holly's request
Improve newsletter signup front-end
Merge pull request #1725 from darkwing/zone-headers

Prevent zone margin and overlap issues per Holly's request
added text to stackoverlow search label
Merge pull request #1722 from groovecoder/addons-zone-link-945117

bug 945117 - nav menu link for Add-ons zone
Merge pull request #1721 from groovecoder/add-mdn-tests-to-README

add link to mdn-tests to README
Corrected text
Fixed
Merge pull request #1720 from darkwing/dev-program-941452

fix bug 941452 - Update homepage with dev program content
Update Zones to remain in alphabetical order

We had been doing this until recently, but "Firefox Marketplace" and
"Add-ons" ended up out of order.

Dropping "Persona" from the homepage feels strange, but we have the
following bug open for solving this long term.

https://bugzilla.mozilla.org/show_bug.cgi?id=946777
Fix bug 942370: Use Font Awesome for profile links
Merge pull request #1726 from icaaq/add_label_to_stacksearch

added text to stackoverlow search label
Merge pull request #1727 from openjck/profile-icons-fontawesome

Fix bug 942370: Use Font Awesome for profile links
Rename StackOverflow on Learn JavaScript page

> Stack Overflow is a programmer Q&A site on the Stack Exchange Network.
> As a name, Stack Overflow, is always written "Stack Overflow" (two
> words, capital letters).

http://stackexchange.com/legal/trademark-guidance
Merge pull request #1730 from openjck/stack-space-overflow

Rename StackOverflow on Learn JavaScript page
Merge pull request #1728 from openjck/alphabetize-zones

Update Zones to remain in alphabetical order
Create more accurate accordion opening and 'current' styling