D21622: Use a more conventional dropdown menu style instead of press-and-hold

[Noah Davis]

ndavis added a comment.


  +1, pressing and holding feels unnecessarily slow.

REPOSITORY
  R223 Okular

REVISION DETAIL
  https://phabricator.kde.org/D21622

To: ngraham, #okular, #vdg
Cc: ndavis, abetts, filipf, okular-devel, joaonetto, tfella, ngraham, 
darcyshen, aacid