am 0d6b5acd: am 6c0704d6: am 53f8bc3a: am 92ae766a: fix slow 2-pane transitions; fix 2-pane animations in portrait

* commit '0d6b5acdd90f7b390fa77f20011d68982aa45417':
  fix slow 2-pane transitions; fix 2-pane animations in portrait