* use common styles for spinner anchor and dropdown text
(introduced in I3063cfea)
* allow dropdown item height to scale beyond fixed height to fit
huge text
Other fixes:
* use Gmail's color for dropdown and folder list header text
* remove spurious divider in dropdown items that precede a
header
Bug: 5687252
Change-Id: Iafd5d1dc7c3809393c3892138b42b7274fb03a27
