set not-allowed cursor on disabled radio+checkbox labels

BS3 commits: 7231efabde1fb58576d7f05194218e888a9a70c8
Repaint Fixes When Scrolling

BS3 commits: 3ee5542c990817324f0a07b97d01d1fe206fd8d6
fix nested containers (addresses some of 13682)

BS3 commits: d1cf27bd0336b0dcec3fd40314e405e2a5bc0a66
Fix bug where a panel recieve extra top border when placed within a collapsible panel

BS3 commits: 14c3760033e77e0e0d754d27522d3c57219c5382