fixes 10497: Fix Windows 8 and Windows Phone 8 behavior and apply it to the docs. remove unnecessary right and left properties on .modal-dialog

BS3 commits: 2dc7ab4bbb70abfcdb0aa179935c72ddbb3e66e5,
6e064894db4a67ed2c1180212426a076a494d300
run grunt

BS3 commits: fddcadbc21cf35fb584ab02dc0817612da6596a4
fixes 10497: Fix Windows 8 and Windows Phone 8 behavior and apply it to the docs

BS3 commits: 2dc7ab4bbb70abfcdb0aa179935c72ddbb3e66e5
fixes 10497: Fix Windows 8 and Windows Phone 8 behavior and apply it to the docs

BS3 commits: 2dc7ab4bbb70abfcdb0aa179935c72ddbb3e66e5