Use abbr elements for countdown labels
Removed trailing commas, updated flame images

The flame is meant to imply a single, continuous fox tail so we shouldn't show two ends. Updated the image so one segment loops out of frame rather than reveal the end.
Merge pull request #603 from craigcook/countdown-abbreviations

Use abbr elements for countdown labels
Bug 764261: Fix still broken moz.org/zh-TW/ redirects.

Also fix several rules that were forcing many URLs to
be en-US only. Bedrock now takes care of deciding which
pages to redirect to the default lang (en-US) and which
to display as translated as of bug 794059. Allowing all
locales to pass through to bedrock for the ones that were
redirecting all locales to en-US will enable our l10n
managers to turn on locales on a per-page basis without
the need for a code push.
Merge pull request #605 from pmclanahan/bug-764261-fix-still-broken-redirects

Bug 764261: Fix still broken moz.org/zh-TW/ redirects.
Bug 755826: Add redirect for zh-CN home page.
Merge pull request #606 from pmclanahan/bug-755826-redirect-zh-CN-home

Bug 755826: Add redirect for zh-CN home page.
[Bug 833376] Add Phones/Tablets headings
Merge pull request #607 from sgarrity/bug-833376-devices-headings

[Bug 833376] Add Phones/Tablets headings