Filed http://openradar.appspot.com/18987206

BS3 commits: 61c6e186a97481d39997a23f463f610cc851f0ad
split .form-inline .input-group into separate docs example

BS3 commits: 0c1527010893065635b8af7df221db9edb3e8971
Add modal autofocus example

BS3 commits: 5245bafb928f23930d50fa5bf3389638e5273f88
rm redundant role="button" from <button>

BS3 commits: 7876ebd2ed230334a3e591ce550bac702c845da5
Docs button section restructure

BS3 commits: 1a2baf48735ee1762ce046e5bb24f5c8d6ba187a
Specify `img` alternative text.

BS3 commits: d782eed426728a9a5ebe600a2f264c0f27a22c8f
Docs clean up - unnecessary role attributes, callout clarifications

BS3 commits: 450a9ece107a2010e7d0c4eddafc58bad697b569
Since Safari has released new fixed versions, we're unlikely to take any further action on this.

BS3 commits: 03f35d2daba72f3fb9f74ffae0a0837a2ce59bdd