Fix Bug 1034859 - [404] https://www.mozilla.org/en-US/about/buttons/MoCo_160x280.png
Merge pull request #2146 from kyoshino/bug-1034859-buttons-404

Fix Bug 1034859 - [404] https://www.mozilla.org/en-US/about/buttons/MoCo_160x280.png
Bug 878570 - Update Featured Mozilla-Based Applications
Merge pull request #2147 from retornam/Bug-878570-Update-Mozilla-based

Bug 878570 - Update Featured Mozilla-Based Applications
Updating nigtingale img
Merge pull request #2148 from retornam/imgfix

Updating nigtingale img
Bug 801909: Port /credits and /credits/faq to bedrock.

* Add credits CSV file processing.
* Add FAQ and Credits templates.
* Add cron command for updating credits.csv from svn.
* Add new app for updating external files.
* Add updating external files to deployment.
* Add apache rule and cache headers.
* Add support for last-modified header based on date from web server.
Basic styles for Credits FAQ page (Bug 801909)