Add poster frame attribute to video() helper
Bug 905347
Use video() helper for videos across bedrock
Bug 905348
Bug 832348: Redirect all default documents (index.html) to the folder.
Remove mutable default argument from platform_img

See http://effbot.org/zone/default-values.htm for decent explanation of
why this is bad.

Also added tests.
Merge pull request #1173 from jgmize/remove-mutable-default-arg-platform_img

Remove mutable default argument from platform_img
Merge pull request #1166 from sgarrity/bug-905348-video

Add poster frame attribute to video() helper and use the video() helper across bedrock
Fix typo in fx/performance screencast ogv video URL.
Merge pull request #1172 from pmclanahan/redirect-index-html-bug-832348

Bug 832348: Redirect all default documents (index.html) to the folder.
Bug 892470 - enable plugincheck for pt-PT, rm, tr

Note: don't close the bug when merged, it's used to track activations
for all locales.
Merge pull request #1174 from flodolo/plugincheck_trpt

Bug 892470 - enable plugincheck for pt-PT, rm, tr
Wrap strings for l10n on mozilla.org/persona pages
Bug 905697
Merge pull request #1177 from sgarrity/bug-905697-persona-l10n

Wrap strings for l10n on mozilla.org/persona pages
Bug 736934 - Figure out way to set single aurora, beta, release, esr versions in single place for .htaccess

Making `.htaccess` maintenance free.
Merge pull request #1004 from kyoshino/bug-736934-redirector

Bug 736934 - Figure out way to set single aurora, beta, release, esr versions in single place for .htaccess
See [Bug 868199](https://bugzilla.mozilla.org/show_bug.cgi?id=868199)

 - custom messaging support for Desktop
   - non-Firefox
   - Firefox old
   - Firefox up-to-date
 - custom messaging support for Android
   - non-Firefox
   - Firefox old
   - Firefox up-to-date
 - custom messaging support for Firefox OS, informative links
 - custom messaging support for iOS, friendly unsupported message
 - improved screenshots
   - less locale-dependent
   - more platform-specific
 - added Google Analytics custom tracking
   - off-site links
   - custom var for platform reporting