Update vibration.json
Changed placeholder support for Android 4 & 4.1

Android 4.0 and Android 4.1 Browser and WebView doesn't show up the placeholder for <input type=\"number\"> field, link: https://code.google.com/p/android/issues/detail?id=24626
data update
Merge pull request #493 from kennethlynne/patch-1

Update vibration.json
Merge pull request #494 from Windstalker/patch-1

Changed placeholder support for Android 4 & 4.1
data update
Added bug

Added bug describing the border collapse issue for table that need border radius.
This works as of Firefox 30

I tried [this demo](http://html5-demos.appspot.com/static/css/sticky.html) in Firefox aurora 30.0a2, and it behaves as spec'd.
Merge pull request #497 from hitautodestruct/patch-1

Added bug
Merge pull request #498 from JoshWillik/patch-1

'position: sticky' works as of Firefox 30
data update