Merge commit '11b6a29dfe380c97fa3df67a6b97ff3383592b58'
* commit '11b6a29dfe380c97fa3df67a6b97ff3383592b58':
AI 150594: change the homepage markup and styles to allow variable height in
AI 150587: add a sitemap for translated docs, for submission to Webmaster Tools,
AI 150541: roll the docs forward to 1.5 r3
AI 150538: add note that appwidget updates will wake the device and suggest an alarm
AI 150536: Change the formatting of sdk redirect pages so that they are not language-specific.
AI 150535: add the Videos page to the site
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