Bug 907330 - Use newsletter languages instead of hard-coding
Bug 894246: Update webfont CSS
 - Cache-bust Open Sans fonts
 - drop SVN include
 - drop extra .eot
These changes are based on http://www.fontspring.com/blog/the-new-bulletproof-font-face-syntax
Bug 903216: Some l10n pages show {OK} from *.lang files
Enable /plugincheck and /new for nb-NO

Updated rewrite rule to enable plugincheck (bug 892470) and new
download page (bug 881754) for nb-NO
Bug 901541 - newsletter recovery page

* When someone goes to the /existing page with an invalid token or no
  token, redirect them to a recovery page
* On the recovery page, they can enter their email address and we'll
  send them a message containing a valid link to manage their subscriptions.
* If the email is not known, we tell them to check for typos or go sign up.
Bug 905165:  Create a helper function for link to press blog (l10n)
Fix test to check correct locale and make more DRY
Fix bug 904726: Update to latest playdoh-lib.

Upgades to Django==1.4.6.
Bug 903886 - Expose canonical and alternate URLs on Bedrock views