Sync call_detail and call_stats_detail layouts.

Move the header controls into a common layout so the same controls are
present for both cases. This essentially reverts
d8ebf219d7716a9da16abc2bad9e5cb5c12e1d56 and replaces it with a better
solution.
Also properly hide/show secondary icon divider.

Change-Id: Ibafeededfde293128599becfab93c17dd84c1391